diff --git a/interface-definitions/dhcp-server.xml.in b/interface-definitions/dhcp-server.xml.in
index 081f7ed42..8aaeeb29d 100644
--- a/interface-definitions/dhcp-server.xml.in
+++ b/interface-definitions/dhcp-server.xml.in
@@ -1,466 +1,456 @@
 <?xml version="1.0"?>
 <!-- DHCP server configuration -->
 <interfaceDefinition>
   <node name="service">
     <children>
       <node name="dhcp-server" owner="${vyos_conf_scripts_dir}/dhcp_server.py">
         <properties>
           <help>Dynamic Host Configuration Protocol (DHCP) for DHCP server</help>
           <priority>911</priority>
         </properties>
         <children>
           #include <include/generic-disable-node.xml.i>
           <leafNode name="dynamic-dns-update">
             <properties>
               <help>Dynamically update Domain Name System (RFC4702)</help>
               <valueless/>
             </properties>
           </leafNode>
           <node name="failover">
             <properties>
               <help>DHCP failover configuration</help>
             </properties>
             <children>
               #include <include/source-address-ipv4.xml.i>
               <leafNode name="remote">
                 <properties>
                   <help>IPv4 remote address used for connectio</help>
                   <valueHelp>
                     <format>ipv4</format>
                     <description>IPv4 address of failover peer</description>
                   </valueHelp>
                   <constraint>
                     <validator name="ipv4-address"/>
                   </constraint>
                 </properties>
               </leafNode>
               <leafNode name="name">
                 <properties>
                   <help>Peer name used to identify connection</help>
                   <constraint>
                     <regex>[-_a-zA-Z0-9.]+</regex>
                   </constraint>
                   <constraintErrorMessage>Invalid failover peer name. May only contain letters, numbers and .-_</constraintErrorMessage>
                 </properties>
               </leafNode>
               <leafNode name="status">
                 <properties>
                   <help>Failover hierarchy</help>
                   <completionHelp>
                     <list>primary secondary</list>
                   </completionHelp>
                   <valueHelp>
                     <format>primary</format>
                     <description>Configure this server to be the primary node</description>
                   </valueHelp>
                   <valueHelp>
                     <format>secondary</format>
                     <description>Configure this server to be the secondary node</description>
                   </valueHelp>
                   <constraint>
                     <regex>(primary|secondary)</regex>
                   </constraint>
                   <constraintErrorMessage>Invalid DHCP failover peer status</constraintErrorMessage>
                 </properties>
               </leafNode>
               #include <include/pki/ca-certificate.xml.i>
               #include <include/pki/certificate.xml.i>
             </children>
           </node>
           <leafNode name="hostfile-update">
             <properties>
               <help>Updating /etc/hosts file (per client lease)</help>
               <valueless/>
             </properties>
           </leafNode>
           #include <include/listen-address-ipv4.xml.i>
           <tagNode name="shared-network-name">
             <properties>
               <help>Name of DHCP shared network</help>
               <constraint>
                 <regex>[-_a-zA-Z0-9.]+</regex>
               </constraint>
               <constraintErrorMessage>Invalid shared network name. May only contain letters, numbers and .-_</constraintErrorMessage>
             </properties>
             <children>
               <leafNode name="authoritative">
                 <properties>
                   <help>Option to make DHCP server authoritative for this physical network</help>
                   <valueless/>
                 </properties>
               </leafNode>
               #include <include/dhcp/domain-name.xml.i>
               #include <include/dhcp/domain-search.xml.i>
               #include <include/dhcp/ntp-server.xml.i>
               #include <include/generic-description.xml.i>
               #include <include/generic-disable-node.xml.i>
               #include <include/name-server-ipv4.xml.i>
               <tagNode name="subnet">
                 <properties>
                   <help>DHCP subnet for shared network</help>
                   <valueHelp>
                     <format>ipv4net</format>
                     <description>IPv4 address and prefix length</description>
                   </valueHelp>
                   <constraint>
                     <validator name="ipv4-prefix"/>
                   </constraint>
                   <constraintErrorMessage>Invalid IPv4 subnet definition</constraintErrorMessage>
                 </properties>
                 <children>
                   <leafNode name="bootfile-name">
                     <properties>
                       <help>Bootstrap file name</help>
                       <constraint>
                         <regex>[[:ascii:]]{1,253}</regex>
                       </constraint>
                     </properties>
                   </leafNode>
                   <leafNode name="bootfile-server">
                     <properties>
                       <help>Server from which the initial boot file is to be loaded</help>
                       <valueHelp>
                         <format>ipv4</format>
                         <description>Bootfile server IPv4 address</description>
                       </valueHelp>
                       <valueHelp>
                         <format>hostname</format>
                         <description>Bootfile server FQDN</description>
                       </valueHelp>
                       <constraint>
                         <validator name="ipv4-address"/>
                         <validator name="fqdn"/>
                       </constraint>
                     </properties>
                   </leafNode>
                   <leafNode name="bootfile-size">
                     <properties>
                       <help>Bootstrap file size</help>
                       <valueHelp>
                         <format>u32:1-16</format>
                         <description>Bootstrap file size in 512 byte blocks</description>
                       </valueHelp>
                       <constraint>
                         <validator name="numeric" argument="--range 1-16"/>
                       </constraint>
                     </properties>
                   </leafNode>
                   #include <include/dhcp/captive-portal.xml.i>
                   <leafNode name="client-prefix-length">
                     <properties>
                       <help>Specifies the clients subnet mask as per RFC 950. If unset, subnet declaration is used.</help>
                       <valueHelp>
                         <format>u32:0-32</format>
                         <description>DHCP client prefix length must be 0 to 32</description>
                       </valueHelp>
                       <constraint>
                         <validator name="numeric" argument="--range 0-32"/>
                       </constraint>
                       <constraintErrorMessage>DHCP client prefix length must be 0 to 32</constraintErrorMessage>
                     </properties>
                   </leafNode>
                   <leafNode name="default-router">
                     <properties>
                       <help>IP address of default router</help>
                       <valueHelp>
                         <format>ipv4</format>
                         <description>Default router IPv4 address</description>
                       </valueHelp>
                       <constraint>
                         <validator name="ipv4-address"/>
                       </constraint>
                     </properties>
                   </leafNode>
                   #include <include/dhcp/domain-name.xml.i>
                   #include <include/dhcp/domain-search.xml.i>
                   #include <include/generic-description.xml.i>
                   #include <include/name-server-ipv4.xml.i>
                   <leafNode name="exclude">
                     <properties>
                       <help>IP address to exclude from DHCP lease range</help>
                       <valueHelp>
                         <format>ipv4</format>
                         <description>IPv4 address to exclude from lease range</description>
                       </valueHelp>
                       <constraint>
                         <validator name="ipv4-address"/>
                       </constraint>
                       <multi/>
                     </properties>
                   </leafNode>
                   <leafNode name="ip-forwarding">
                     <properties>
                       <help>Enable IP forwarding on client</help>
                       <valueless/>
                     </properties>
                   </leafNode>
                   <leafNode name="lease">
                     <properties>
                       <help>Lease timeout in seconds</help>
                       <valueHelp>
                         <format>u32</format>
                         <description>DHCP lease time in seconds</description>
                       </valueHelp>
                       <constraint>
                         <validator name="numeric" argument="--range 0-4294967295"/>
                       </constraint>
                       <constraintErrorMessage>DHCP lease time must be between 0 and 4294967295 (49 days)</constraintErrorMessage>
                     </properties>
                     <defaultValue>86400</defaultValue>
                   </leafNode>
                   #include <include/dhcp/ntp-server.xml.i>
                   <leafNode name="pop-server">
                     <properties>
                       <help>IP address of POP3 server</help>
                       <valueHelp>
                         <format>ipv4</format>
                         <description>POP3 server IPv4 address</description>
                       </valueHelp>
                       <constraint>
                         <validator name="ipv4-address"/>
                       </constraint>
                       <multi/>
                     </properties>
                   </leafNode>
                   <leafNode name="server-identifier">
                     <properties>
                       <help>Address for DHCP server identifier</help>
                       <valueHelp>
                         <format>ipv4</format>
                         <description>DHCP server identifier IPv4 address</description>
                       </valueHelp>
                       <constraint>
                         <validator name="ipv4-address"/>
                       </constraint>
                     </properties>
                   </leafNode>
                   <leafNode name="smtp-server">
                     <properties>
                       <help>IP address of SMTP server</help>
                       <valueHelp>
                         <format>ipv4</format>
                         <description>SMTP server IPv4 address</description>
                       </valueHelp>
                       <constraint>
                         <validator name="ipv4-address"/>
                       </constraint>
                       <multi/>
                     </properties>
                   </leafNode>
                   <tagNode name="range">
                     <properties>
                       <help>DHCP lease range</help>
                       <constraint>
                         <regex>[-_a-zA-Z0-9.]+</regex>
                       </constraint>
                       <constraintErrorMessage>Invalid range name, may only be alphanumeric, dot and hyphen</constraintErrorMessage>
                     </properties>
                     <children>
                       <leafNode name="start">
                         <properties>
                           <help>First IP address for DHCP lease range</help>
                           <valueHelp>
                             <format>ipv4</format>
                             <description>IPv4 start address of pool</description>
                           </valueHelp>
                           <constraint>
                             <validator name="ipv4-address"/>
                           </constraint>
                         </properties>
                       </leafNode>
                       <leafNode name="stop">
                         <properties>
                           <help>Last IP address for DHCP lease range</help>
                           <valueHelp>
                             <format>ipv4</format>
                             <description>IPv4 end address of pool</description>
                           </valueHelp>
                           <constraint>
                             <validator name="ipv4-address"/>
                           </constraint>
                         </properties>
                       </leafNode>
                     </children>
                   </tagNode>
                   <tagNode name="static-mapping">
                     <properties>
-                      <help>Name of static mapping</help>
+                      <help>Hostname for static mapping reservation</help>
                       <constraint>
-                        <regex>[-_a-zA-Z0-9.]+</regex>
+                        <validator name="fqdn"/>
                       </constraint>
-                      <constraintErrorMessage>Invalid static mapping name, may only be alphanumeric, dot and hyphen</constraintErrorMessage>
+                      <constraintErrorMessage>Invalid static mapping hostname</constraintErrorMessage>
                     </properties>
                     <children>
                       #include <include/generic-disable-node.xml.i>
                       <leafNode name="ip-address">
                         <properties>
                           <help>Fixed IP address of static mapping</help>
                           <valueHelp>
                             <format>ipv4</format>
                             <description>IPv4 address used in static mapping</description>
                           </valueHelp>
                           <constraint>
                             <validator name="ipv4-address"/>
                           </constraint>
                         </properties>
                       </leafNode>
-                      <leafNode name="mac-address">
-                        <properties>
-                          <help>Media Access Control (MAC) address</help>
-                          <valueHelp>
-                            <format>macaddr</format>
-                            <description>Hardware (MAC) address</description>
-                          </valueHelp>
-                          <constraint>
-                            <validator name="mac-address"/>
-                          </constraint>
-                        </properties>
-                      </leafNode>
+                      #include <include/interface/mac.xml.i>
+                      #include <include/interface/duid.xml.i>
                     </children>
                   </tagNode>
                   <tagNode name="static-route">
                     <properties>
                       <help>Classless static route destination subnet</help>
                       <valueHelp>
                         <format>ipv4net</format>
                         <description>IPv4 address and prefix length</description>
                       </valueHelp>
                       <constraint>
                         <validator name="ipv4-prefix"/>
                       </constraint>
                     </properties>
                     <children>
                       <leafNode name="next-hop">
                         <properties>
                           <help>IP address of router to be used to reach the destination subnet</help>
                           <valueHelp>
                             <format>ipv4</format>
                             <description>IPv4 address of router</description>
                           </valueHelp>
                           <constraint>
                             <validator name="ip-address"/>
                           </constraint>
                         </properties>
                       </leafNode>
                     </children>
                   </tagNode >
                   <leafNode name="ipv6-only-preferred">
                     <properties>
                       <help>Disable IPv4 on IPv6 only hosts (RFC 8925)</help>
                       <valueHelp>
                         <format>u32</format>
                         <description>Seconds</description>
                       </valueHelp>
                       <constraint>
                         <validator name="numeric" argument="--range 0-4294967295"/>
                       </constraint>
                       <constraintErrorMessage>Seconds must be between 0 and 4294967295 (49 days)</constraintErrorMessage>
                     </properties>
                   </leafNode>
                   <leafNode name="tftp-server-name">
                     <properties>
                       <help>TFTP server name</help>
                       <valueHelp>
                         <format>ipv4</format>
                         <description>TFTP server IPv4 address</description>
                       </valueHelp>
                       <valueHelp>
                         <format>hostname</format>
                         <description>TFTP server FQDN</description>
                       </valueHelp>
                       <constraint>
                         <validator name="ipv4-address"/>
                         <validator name="fqdn"/>
                       </constraint>
                     </properties>
                   </leafNode>
                   <leafNode name="time-offset">
                     <properties>
                       <help>Client subnet offset in seconds from Coordinated Universal Time (UTC)</help>
                       <valueHelp>
                         <format>[-]N</format>
                         <description>Time offset (number, may be negative)</description>
                       </valueHelp>
                       <constraint>
                         <regex>-?[0-9]+</regex>
                       </constraint>
                       <constraintErrorMessage>Invalid time offset value</constraintErrorMessage>
                     </properties>
                   </leafNode>
                   <leafNode name="time-server">
                     <properties>
                       <help>IP address of time server</help>
                       <valueHelp>
                         <format>ipv4</format>
                         <description>Time server IPv4 address</description>
                       </valueHelp>
                       <constraint>
                         <validator name="ipv4-address"/>
                       </constraint>
                       <multi/>
                     </properties>
                   </leafNode>
                   <leafNode name="time-zone">
                     <properties>
                       <help>Time zone to send to clients. Uses RFC4833 options 100 and 101</help>
                       <completionHelp>
                         <script>timedatectl list-timezones</script>
                       </completionHelp>
                       <constraint>
                         <validator name="timezone" argument="--validate"/>
                       </constraint>
                     </properties>
                   </leafNode>
                   <node name="vendor-option">
                     <properties>
                       <help>Vendor Specific Options</help>
                     </properties>
                     <children>
                       <node name="ubiquiti">
                         <properties>
                           <help>Ubiquiti specific parameters</help>
                         </properties>
                         <children>
                           <leafNode name="unifi-controller">
                             <properties>
                               <help>Address of UniFi controller</help>
                               <valueHelp>
                                 <format>ipv4</format>
                                 <description>IP address of UniFi controller</description>
                               </valueHelp>
                               <constraint>
                                 <validator name="ipv4-address"/>
                               </constraint>
                             </properties>
                           </leafNode>
                         </children>
                       </node>
                     </children>
                   </node>
                   <leafNode name="wins-server">
                     <properties>
                       <help>IP address for Windows Internet Name Service (WINS) server</help>
                       <valueHelp>
                         <format>ipv4</format>
                         <description>WINS server IPv4 address</description>
                       </valueHelp>
                       <constraint>
                         <validator name="ipv4-address"/>
                       </constraint>
                       <multi/>
                     </properties>
                   </leafNode>
                   <leafNode name="wpad-url">
                     <properties>
                       <help>Web Proxy Autodiscovery (WPAD) URL</help>
                     </properties>
                   </leafNode>
                 </children>
               </tagNode>
             </children>
           </tagNode>
         </children>
       </node>
     </children>
   </node>
 </interfaceDefinition>
diff --git a/interface-definitions/dhcpv6-server.xml.in b/interface-definitions/dhcpv6-server.xml.in
index b37f79434..10fdbf3f7 100644
--- a/interface-definitions/dhcpv6-server.xml.in
+++ b/interface-definitions/dhcpv6-server.xml.in
@@ -1,386 +1,375 @@
 <?xml version="1.0"?>
 <interfaceDefinition>
   <node name="service">
     <children>
       <node name="dhcpv6-server" owner="${vyos_conf_scripts_dir}/dhcpv6_server.py">
         <properties>
           <help>DHCP for IPv6 (DHCPv6) server</help>
           <priority>900</priority>
         </properties>
         <children>
           #include <include/generic-disable-node.xml.i>
           <node name="global-parameters">
             <properties>
               <help>Additional global parameters for DHCPv6 server</help>
             </properties>
             <children>
               #include <include/name-server-ipv6.xml.i>
             </children>
           </node>
           <leafNode name="preference">
             <properties>
               <help>Preference of this DHCPv6 server compared with others</help>
               <valueHelp>
                 <format>u32:0-255</format>
                 <description>DHCPv6 server preference (0-255)</description>
               </valueHelp>
               <constraint>
                 <validator name="numeric" argument="--range 0-255"/>
               </constraint>
               <constraintErrorMessage>Preference must be between 0 and 255</constraintErrorMessage>
             </properties>
           </leafNode>
           <tagNode name="shared-network-name">
             <properties>
               <help>DHCPv6 shared network name</help>
               <constraint>
                 <regex>[-_a-zA-Z0-9.]+</regex>
               </constraint>
               <constraintErrorMessage>Invalid DHCPv6 shared network name. May only contain letters, numbers and .-_</constraintErrorMessage>
             </properties>
             <children>
               #include <include/generic-disable-node.xml.i>
               #include <include/generic-description.xml.i>
               <leafNode name="interface">
                 <properties>
                   <help>Optional interface for this shared network to accept requests from</help>
                   <completionHelp>
                     <script>${vyos_completion_dir}/list_interfaces</script>
                   </completionHelp>
                   <valueHelp>
                     <format>txt</format>
                     <description>Interface name</description>
                   </valueHelp>
                   <constraint>
                     #include <include/constraint/interface-name.xml.i>
                   </constraint>
                 </properties>
               </leafNode>
               <node name="common-options">
                 <properties>
                   <help>Common options to distribute to all clients, including stateless clients</help>
                 </properties>
                 <children>
                   <leafNode name="info-refresh-time">
                     <properties>
                       <help>Time (in seconds) that stateless clients should wait between refreshing the information they were given</help>
                       <valueHelp>
                         <format>u32:1-4294967295</format>
                         <description>DHCPv6 information refresh time</description>
                       </valueHelp>
                       <constraint>
                         <validator name="numeric" argument="--range 1-4294967295"/>
                       </constraint>
                     </properties>
                   </leafNode>
                   #include <include/dhcp/domain-search.xml.i>
                   #include <include/name-server-ipv6.xml.i>
                 </children>
               </node>
               <tagNode name="subnet">
                 <properties>
                   <help>IPv6 DHCP subnet for this shared network</help>
                   <valueHelp>
                     <format>ipv6net</format>
                     <description>IPv6 address and prefix length</description>
                   </valueHelp>
                   <constraint>
                     <validator name="ipv6-prefix"/>
                   </constraint>
                 </properties>
                 <children>
                   <node name="address-range">
                     <properties>
                       <help>Parameters setting ranges for assigning IPv6 addresses</help>
                     </properties>
                     <children>
                       <leafNode name="prefix">
                         <properties>
                           <help>IPv6 prefix defining range of addresses to assign</help>
                           <valueHelp>
                             <format>ipv6net</format>
                             <description>IPv6 address and prefix length</description>
                           </valueHelp>
                           <constraint>
                             <validator name="ipv6-prefix"/>
                           </constraint>
                           <multi/>
                         </properties>
                       </leafNode>
                       <tagNode name="start">
                         <properties>
                           <help>First in range of consecutive IPv6 addresses to assign</help>
                           <valueHelp>
                             <format>ipv6</format>
                             <description>IPv6 address</description>
                           </valueHelp>
                           <constraint>
                             <validator name="ipv6-address"/>
                           </constraint>
                         </properties>
                         <children>
                           <leafNode name="stop">
                             <properties>
                               <help>Last in range of consecutive IPv6 addresses</help>
                               <valueHelp>
                                 <format>ipv6</format>
                                 <description>IPv6 address</description>
                               </valueHelp>
                               <constraint>
                                 <validator name="ipv6-address"/>
                               </constraint>
                             </properties>
                           </leafNode>
                         </children>
                       </tagNode>
                     </children>
                   </node>
                   #include <include/dhcp/captive-portal.xml.i>
                   #include <include/dhcp/domain-search.xml.i>
                   <node name="lease-time">
                     <properties>
                       <help>Parameters relating to the lease time</help>
                     </properties>
                     <children>
                       <leafNode name="default">
                         <properties>
                           <help>Default time (in seconds) that will be assigned to a lease</help>
                           <valueHelp>
                             <format>u32:1-4294967295</format>
                             <description>DHCPv6 valid lifetime</description>
                           </valueHelp>
                           <constraint>
                             <validator name="numeric" argument="--range 1-4294967295"/>
                           </constraint>
                         </properties>
                       </leafNode>
                       <leafNode name="maximum">
                         <properties>
                           <help>Maximum time (in seconds) that will be assigned to a lease</help>
                           <valueHelp>
                             <format>u32:1-4294967295</format>
                             <description>Maximum lease time in seconds</description>
                           </valueHelp>
                           <constraint>
                             <validator name="numeric" argument="--range 1-4294967295"/>
                           </constraint>
                         </properties>
                       </leafNode>
                       <leafNode name="minimum">
                         <properties>
                           <help>Minimum time (in seconds) that will be assigned to a lease</help>
                           <valueHelp>
                             <format>u32:1-4294967295</format>
                             <description>Minimum lease time in seconds</description>
                           </valueHelp>
                           <constraint>
                             <validator name="numeric" argument="--range 1-4294967295"/>
                           </constraint>
                         </properties>
                       </leafNode>
                     </children>
                   </node>
                   #include <include/name-server-ipv6.xml.i>
                   <leafNode name="nis-domain">
                     <properties>
                       <help>NIS domain name for client to use</help>
                       <constraint>
                         <regex>[-_a-zA-Z0-9.]+</regex>
                       </constraint>
                       <constraintErrorMessage>Invalid NIS domain name</constraintErrorMessage>
                     </properties>
                   </leafNode>
                   <leafNode name="nis-server">
                     <properties>
                       <help>IPv6 address of a NIS Server</help>
                       <valueHelp>
                         <format>ipv6</format>
                         <description>IPv6 address of NIS server</description>
                       </valueHelp>
                       <constraint>
                         <validator name="ipv6-address"/>
                       </constraint>
                       <multi/>
                     </properties>
                   </leafNode>
                   <leafNode name="nisplus-domain">
                     <properties>
                       <help>NIS+ domain name for client to use</help>
                       <constraint>
                         <regex>[-_a-zA-Z0-9.]+</regex>
                       </constraint>
                       <constraintErrorMessage>Invalid NIS+ domain name. May only contain letters, numbers and .-_</constraintErrorMessage>
                     </properties>
                   </leafNode>
                   <leafNode name="nisplus-server">
                     <properties>
                       <help>IPv6 address of a NIS+ Server</help>
                       <valueHelp>
                         <format>ipv6</format>
                         <description>IPv6 address of NIS+ server</description>
                       </valueHelp>
                       <constraint>
                         <validator name="ipv6-address"/>
                       </constraint>
                       <multi/>
                     </properties>
                   </leafNode>
                   <node name="prefix-delegation">
                     <properties>
                       <help>Parameters relating to IPv6 prefix delegation</help>
                     </properties>
                     <children>
                       <tagNode name="prefix">
                         <properties>
                           <help>IPv6 prefix to be used in prefix delegation</help>
                           <valueHelp>
                             <format>ipv6</format>
                             <description>IPv6 prefix used in prefix delegation</description>
                           </valueHelp>
                           <constraint>
                             <validator name="ipv6-address"/>
                           </constraint>
                         </properties>
                         <children>
                           <leafNode name="prefix-length">
                             <properties>
                               <help>Length in bits of prefix</help>
                               <valueHelp>
                                 <format>u32:32-64</format>
                                 <description>Prefix length (32-64)</description>
                               </valueHelp>
                               <constraint>
                                 <validator name="numeric" argument="--range 32-64"/>
                               </constraint>
                               <constraintErrorMessage>Prefix length must be between 32 and 64</constraintErrorMessage>
                             </properties>
                           </leafNode>
                           <leafNode name="delegated-length">
                             <properties>
                               <help>Length in bits of prefixes to be delegated</help>
                               <valueHelp>
                                 <format>u32:32-64</format>
                                 <description>Delegated prefix length (32-64)</description>
                               </valueHelp>
                               <constraint>
                                 <validator name="numeric" argument="--range 32-96"/>
                               </constraint>
                               <constraintErrorMessage>Delegated prefix length must be between 32 and 96</constraintErrorMessage>
                             </properties>
                           </leafNode>
                         </children>
                       </tagNode>
                     </children>
                   </node>
                   <leafNode name="sip-server">
                     <properties>
                       <help>IPv6 address of SIP server</help>
                       <valueHelp>
                         <format>ipv6</format>
                         <description>IPv6 address of SIP server</description>
                       </valueHelp>
                       <valueHelp>
                         <format>hostname</format>
                         <description>FQDN of SIP server</description>
                       </valueHelp>
                       <constraint>
                         <validator name="ipv6-address"/>
                         <validator name="fqdn"/>
                       </constraint>
                       <multi/>
                     </properties>
                   </leafNode>
                   <leafNode name="sntp-server">
                     <properties>
                       <help>IPv6 address of an SNTP server for client to use</help>
                       <constraint>
                         <validator name="ipv6-address"/>
                       </constraint>
                       <multi/>
                     </properties>
                   </leafNode>
                   <tagNode name="static-mapping">
                     <properties>
-                      <help>Name of static mapping</help>
+                      <help>Hostname for static mapping reservation</help>
                       <constraint>
-                        <regex>[-_a-zA-Z0-9.]+</regex>
+                        <validator name="fqdn"/>
                       </constraint>
-                      <constraintErrorMessage>Invalid static mapping name. May only contain letters, numbers and .-_</constraintErrorMessage>
+                      <constraintErrorMessage>Invalid static mapping hostname</constraintErrorMessage>
                     </properties>
                     <children>
                       #include <include/generic-disable-node.xml.i>
-                      <leafNode name="identifier">
-                        <properties>
-                          <help>Client identifier (DUID) for this static mapping</help>
-                          <valueHelp>
-                            <format>h[[:h]...]</format>
-                            <description>DUID: colon-separated hex list (as used by isc-dhcp option dhcpv6.client-id)</description>
-                          </valueHelp>
-                          <constraint>
-                            <regex>([0-9A-Fa-f]{1,2}[:])*([0-9A-Fa-f]{1,2})</regex>
-                          </constraint>
-                          <constraintErrorMessage>Invalid DUID, must be in the format h[[:h]...]</constraintErrorMessage>
-                        </properties>
-                      </leafNode>
+                      #include <include/interface/mac.xml.i>
+                      #include <include/interface/duid.xml.i>
                       <leafNode name="ipv6-address">
                         <properties>
                           <help>Client IPv6 address for this static mapping</help>
                           <valueHelp>
                             <format>ipv6</format>
                             <description>IPv6 address for this static mapping</description>
                           </valueHelp>
                           <constraint>
                             <validator name="ipv6-address"/>
                           </constraint>
                         </properties>
                       </leafNode>
                       <leafNode name="ipv6-prefix">
                         <properties>
                           <help>Client IPv6 prefix for this static mapping</help>
                           <valueHelp>
                             <format>ipv6net</format>
                             <description>IPv6 prefix for this static mapping</description>
                           </valueHelp>
                           <constraint>
                             <validator name="ipv6-prefix"/>
                           </constraint>
                         </properties>
                       </leafNode>
                     </children>
                   </tagNode>
                   <node name="vendor-option">
                     <properties>
                       <help>Vendor Specific Options</help>
                     </properties>
                     <children>
                       <node name="cisco">
                         <properties>
                           <help>Cisco specific parameters</help>
                         </properties>
                         <children>
                           <leafNode name="tftp-server">
                             <properties>
                               <help>TFTP server name</help>
                               <valueHelp>
                                 <format>ipv6</format>
                                 <description>TFTP server IPv6 address</description>
                               </valueHelp>
                               <constraint>
                                 <validator name="ipv6-address"/>
                               </constraint>
                               <multi/>
                             </properties>
                           </leafNode>
                         </children>
                       </node>
                     </children>
                   </node>
                 </children>
               </tagNode>
             </children>
           </tagNode>
         </children>
       </node>
     </children>
   </node>
 </interfaceDefinition>
diff --git a/interface-definitions/include/version/dhcp-server-version.xml.i b/interface-definitions/include/version/dhcp-server-version.xml.i
index 7c4b5633e..cc84ea8b9 100644
--- a/interface-definitions/include/version/dhcp-server-version.xml.i
+++ b/interface-definitions/include/version/dhcp-server-version.xml.i
@@ -1,3 +1,3 @@
 <!-- include start from include/version/dhcp-server-version.xml.i -->
-<syntaxVersion component='dhcp-server' version='7'></syntaxVersion>
+<syntaxVersion component='dhcp-server' version='8'></syntaxVersion>
 <!-- include end -->
diff --git a/interface-definitions/include/version/dhcpv6-server-version.xml.i b/interface-definitions/include/version/dhcpv6-server-version.xml.i
index ae4178c90..cb026a54a 100644
--- a/interface-definitions/include/version/dhcpv6-server-version.xml.i
+++ b/interface-definitions/include/version/dhcpv6-server-version.xml.i
@@ -1,3 +1,3 @@
 <!-- include start from include/version/dhcpv6-server-version.xml.i -->
-<syntaxVersion component='dhcpv6-server' version='2'></syntaxVersion>
+<syntaxVersion component='dhcpv6-server' version='3'></syntaxVersion>
 <!-- include end -->
diff --git a/python/vyos/kea.py b/python/vyos/kea.py
index 4a517da5f..819fe16a9 100644
--- a/python/vyos/kea.py
+++ b/python/vyos/kea.py
@@ -1,328 +1,339 @@
 # Copyright 2023 VyOS maintainers and contributors <maintainers@vyos.io>
 #
 # This library is free software; you can redistribute it and/or
 # modify it under the terms of the GNU Lesser General Public
 # License as published by the Free Software Foundation; either
 # version 2.1 of the License, or (at your option) any later version.
 #
 # This library is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 # Lesser General Public License for more details.
 #
 # You should have received a copy of the GNU Lesser General Public
 # License along with this library.  If not, see <http://www.gnu.org/licenses/>.
 
 import json
 import os
 import socket
 
 from datetime import datetime
 
 from vyos.template import is_ipv6
 from vyos.template import isc_static_route
 from vyos.template import netmask_from_cidr
 from vyos.utils.dict import dict_search_args
 from vyos.utils.file import file_permissions
 from vyos.utils.file import read_file
 from vyos.utils.process import cmd
 
 kea4_options = {
     'name_server': 'domain-name-servers',
     'domain_name': 'domain-name',
     'domain_search': 'domain-search',
     'ntp_server': 'ntp-servers',
     'pop_server': 'pop-server',
     'smtp_server': 'smtp-server',
     'time_server': 'time-servers',
     'wins_server': 'netbios-name-servers',
     'default_router': 'routers',
     'server_identifier': 'dhcp-server-identifier',
     'tftp_server_name': 'tftp-server-name',
     'bootfile_size': 'boot-size',
     'time_offset': 'time-offset',
     'wpad_url': 'wpad-url',
     'ipv6_only_preferred': 'v6-only-preferred',
     'captive_portal': 'v4-captive-portal'
 }
 
 kea6_options = {
     'info_refresh_time': 'information-refresh-time',
     'name_server': 'dns-servers',
     'domain_search': 'domain-search',
     'nis_domain': 'nis-domain-name',
     'nis_server': 'nis-servers',
     'nisplus_domain': 'nisp-domain-name',
     'nisplus_server': 'nisp-servers',
     'sntp_server': 'sntp-servers',
     'captive_portal': 'v6-captive-portal'
 }
 
 def kea_parse_options(config):
     options = []
 
     for node, option_name in kea4_options.items():
         if node not in config:
             continue
 
         value = ", ".join(config[node]) if isinstance(config[node], list) else config[node]
         options.append({'name': option_name, 'data': value})
 
     if 'client_prefix_length' in config:
         options.append({'name': 'subnet-mask', 'data': netmask_from_cidr('0.0.0.0/' + config['client_prefix_length'])})
 
     if 'ip_forwarding' in config:
         options.append({'name': 'ip-forwarding', 'data': "true"})
 
     if 'static_route' in config:
         default_route = ''
 
         if 'default_router' in config:
             default_route = isc_static_route('0.0.0.0/0', config['default_router'])
 
         routes = [isc_static_route(route, route_options['next_hop']) for route, route_options in config['static_route'].items()]
 
         options.append({'name': 'rfc3442-static-route', 'data': ", ".join(routes if not default_route else routes + [default_route])})
         options.append({'name': 'windows-static-route', 'data': ", ".join(routes)})
 
     if 'time_zone' in config:
         with open("/usr/share/zoneinfo/" + config['time_zone'], "rb") as f:
             tz_string = f.read().split(b"\n")[-2].decode("utf-8")
 
         options.append({'name': 'pcode', 'data': tz_string})
         options.append({'name': 'tcode', 'data': config['time_zone']})
 
     return options
 
 def kea_parse_subnet(subnet, config):
     out = {'subnet': subnet}
     options = kea_parse_options(config)
 
     if 'bootfile_name' in config:
         out['boot-file-name'] = config['bootfile_name']
 
     if 'bootfile_server' in config:
         out['next-server'] = config['bootfile_server']
 
     if 'lease' in config:
         out['valid-lifetime'] = int(config['lease'])
         out['max-valid-lifetime'] = int(config['lease'])
 
     if 'range' in config:
         pools = []
         for num, range_config in config['range'].items():
             start, stop = range_config['start'], range_config['stop']
             pools.append({'pool': f'{start} - {stop}'})
         out['pools'] = pools
 
     if 'static_mapping' in config:
         reservations = []
         for host, host_config in config['static_mapping'].items():
             if 'disable' in host_config:
                 continue
 
-            obj = {
-                'hw-address': host_config['mac_address']
+            reservation = {
+                'hostname': host,
             }
 
+            if 'mac' in host_config:
+                reservation['hw-address'] = host_config['mac']
+
+            if 'duid' in host_config:
+                reservation['duid'] = host_config['duid']
+
             if 'ip_address' in host_config:
-                obj['ip-address'] = host_config['ip_address']
+                reservation['ip-address'] = host_config['ip_address']
 
-            reservations.append(obj)
+            reservations.append(reservation)
         out['reservations'] = reservations
 
     unifi_controller = dict_search_args(config, 'vendor_option', 'ubiquiti', 'unifi_controller')
     if unifi_controller:
         options.append({
             'name': 'unifi-controller',
             'data': unifi_controller,
             'space': 'ubnt'
         })
 
     if options:
         out['option-data'] = options
 
     return out
 
 def kea6_parse_options(config):
     options = []
 
     if 'common_options' in config:
         common_opt = config['common_options']
 
         for node, option_name in kea6_options.items():
             if node not in common_opt:
                 continue
 
             value = ", ".join(common_opt[node]) if isinstance(common_opt[node], list) else common_opt[node]
             options.append({'name': option_name, 'data': value})
 
     for node, option_name in kea6_options.items():
         if node not in config:
             continue
 
         value = ", ".join(config[node]) if isinstance(config[node], list) else config[node]
         options.append({'name': option_name, 'data': value})
 
     if 'sip_server' in config:
         sip_servers = config['sip_server']
 
         addrs = []
         hosts = []
 
         for server in sip_servers:
             if is_ipv6(server):
                 addrs.append(server)
             else:
                 hosts.append(server)
 
         if addrs:
             options.append({'name': 'sip-server-addr', 'data': ", ".join(addrs)})
-        
+
         if hosts:
             options.append({'name': 'sip-server-dns', 'data': ", ".join(hosts)})
 
     cisco_tftp = dict_search_args(config, 'vendor_option', 'cisco', 'tftp-server')
     if cisco_tftp:
         options.append({'name': 'tftp-servers', 'code': 2, 'space': 'cisco', 'data': cisco_tftp})
 
     return options
 
 def kea6_parse_subnet(subnet, config):
     out = {'subnet': subnet}
     options = kea6_parse_options(config)
 
     if 'address_range' in config:
         addr_range = config['address_range']
         pools = []
 
         if 'prefix' in addr_range:
             for prefix in addr_range['prefix']:
                 pools.append({'pool': prefix})
 
         if 'start' in addr_range:
             for start, range_conf in addr_range['start'].items():
                 stop = range_conf['stop']
                 pools.append({'pool': f'{start} - {stop}'})
 
         out['pools'] = pools
 
     if 'prefix_delegation' in config:
         pd_pools = []
 
         if 'prefix' in config['prefix_delegation']:
             for prefix, pd_conf in config['prefix_delegation']['prefix'].items():
                 pd_pools.append({
                     'prefix': prefix,
                     'prefix-len': int(pd_conf['prefix_length']),
                     'delegated-len': int(pd_conf['delegated_length'])
                 })
 
         out['pd-pools'] = pd_pools
 
     if 'lease_time' in config:
         if 'default' in config['lease_time']:
             out['valid-lifetime'] = int(config['lease_time']['default'])
         if 'maximum' in config['lease_time']:
             out['max-valid-lifetime'] = int(config['lease_time']['maximum'])
         if 'minimum' in config['lease_time']:
             out['min-valid-lifetime'] = int(config['lease_time']['minimum'])
 
     if 'static_mapping' in config:
         reservations = []
         for host, host_config in config['static_mapping'].items():
             if 'disable' in host_config:
                 continue
 
-            reservation = {}
+            reservation = {
+                'hostname': host
+            }
+
+            if 'mac' in host_config:
+                reservation['hw-address'] = host_config['mac']
 
-            if 'identifier' in host_config:
-                reservation['duid'] = host_config['identifier']
+            if 'duid' in host_config:
+                reservation['duid'] = host_config['duid']
 
             if 'ipv6_address' in host_config:
                 reservation['ip-addresses'] = [ host_config['ipv6_address'] ]
 
             if 'ipv6_prefix' in host_config:
                 reservation['prefixes'] = [ host_config['ipv6_prefix'] ]
 
             reservations.append(reservation)
 
         out['reservations'] = reservations
 
     if options:
         out['option-data'] = options
 
     return out
 
 def kea_parse_leases(lease_path):
     contents = read_file(lease_path)
     lines = contents.split("\n")
     output = []
 
     if len(lines) < 2:
         return output
 
     headers = lines[0].split(",")
 
     for line in lines[1:]:
         line_out = dict(zip(headers, line.split(",")))
 
         lifetime = int(line_out['valid_lifetime'])
         expiry = int(line_out['expire'])
 
         line_out['start_timestamp'] = datetime.utcfromtimestamp(expiry - lifetime)
         line_out['expire_timestamp'] = datetime.utcfromtimestamp(expiry) if expiry else None
 
         output.append(line_out)
 
     return output
 
 def _ctrl_socket_command(path, command, args=None):
     if not os.path.exists(path):
         return None
 
     if file_permissions(path) != '0775':
         cmd(f'sudo chmod 775 {path}')
 
     with socket.socket(socket.AF_UNIX, socket.SOCK_STREAM) as sock:
         sock.connect(path)
 
         payload = {'command': command}
         if args:
             payload['arguments'] = args
 
         sock.send(bytes(json.dumps(payload), 'utf-8'))
         result = b''
         while True:
             data = sock.recv(4096)
             result += data
             if len(data) < 4096:
                 break
 
         return json.loads(result.decode('utf-8'))
 
 def kea_get_active_config(inet):
     ctrl_socket = f'/run/kea/dhcp{inet}-ctrl-socket'
 
     config = _ctrl_socket_command(ctrl_socket, 'config-get')
-    
+
     if not config or 'result' not in config or config['result'] != 0:
         return None
 
     return config
 
 def kea_get_pool_from_subnet_id(config, inet, subnet_id):
     shared_networks = dict_search_args(config, 'arguments', f'Dhcp{inet}', 'shared-networks')
 
     if not shared_networks:
         return None
 
     for network in shared_networks:
         if f'subnet{inet}' not in network:
             continue
 
         for subnet in network[f'subnet{inet}']:
             if 'id' in subnet and int(subnet['id']) == int(subnet_id):
                 return network['name']
 
     return None
diff --git a/smoketest/scripts/cli/test_service_dhcp-server.py b/smoketest/scripts/cli/test_service_dhcp-server.py
index 9f6e05ff3..bf0c09965 100755
--- a/smoketest/scripts/cli/test_service_dhcp-server.py
+++ b/smoketest/scripts/cli/test_service_dhcp-server.py
@@ -1,626 +1,631 @@
 #!/usr/bin/env python3
 #
 # Copyright (C) 2020-2021 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
 # published by the Free Software Foundation.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 import os
 import unittest
 
 from json import loads
 
 from base_vyostest_shim import VyOSUnitTestSHIM
 
 from vyos.configsession import ConfigSessionError
-from vyos.utils.dict import dict_search_recursive
 from vyos.utils.process import process_named_running
 from vyos.utils.file import read_file
-from vyos.template import address_from_cidr
 from vyos.template import inc_ip
 from vyos.template import dec_ip
-from vyos.template import netmask_from_cidr
 
 PROCESS_NAME = 'kea-dhcp4'
 CTRL_PROCESS_NAME = 'kea-ctrl-agent'
 KEA4_CONF = '/run/kea/kea-dhcp4.conf'
 KEA4_CTRL = '/run/kea/dhcp4-ctrl-socket'
 base_path = ['service', 'dhcp-server']
 subnet = '192.0.2.0/25'
 router = inc_ip(subnet, 1)
 dns_1 = inc_ip(subnet, 2)
 dns_2 = inc_ip(subnet, 3)
 domain_name = 'vyos.net'
 
 class TestServiceDHCPServer(VyOSUnitTestSHIM.TestCase):
     @classmethod
     def setUpClass(cls):
         super(TestServiceDHCPServer, cls).setUpClass()
+       # Clear out current configuration to allow running this test on a live system
+        cls.cli_delete(cls, base_path)
 
         cidr_mask = subnet.split('/')[-1]
         cls.cli_set(cls, ['interfaces', 'dummy', 'dum8765', 'address', f'{router}/{cidr_mask}'])
 
     @classmethod
     def tearDownClass(cls):
         cls.cli_delete(cls, ['interfaces', 'dummy', 'dum8765'])
         super(TestServiceDHCPServer, cls).tearDownClass()
 
     def tearDown(self):
         self.cli_delete(base_path)
         self.cli_commit()
 
     def walk_path(self, obj, path):
         current = obj
 
         for i, key in enumerate(path):
             if isinstance(key, str):
                 self.assertTrue(isinstance(current, dict), msg=f'Failed path: {path}')
                 self.assertTrue(key in current, msg=f'Failed path: {path}')
             elif isinstance(key, int):
                 self.assertTrue(isinstance(current, list), msg=f'Failed path: {path}')
                 self.assertTrue(0 <= key < len(current), msg=f'Failed path: {path}')
             else:
                 assert False, "Invalid type"
 
             current = current[key]
 
         return current
 
     def verify_config_object(self, obj, path, value):
         base_obj = self.walk_path(obj, path)
         self.assertTrue(isinstance(base_obj, list))
         self.assertTrue(any(True for v in base_obj if v == value))
 
     def verify_config_value(self, obj, path, key, value):
         base_obj = self.walk_path(obj, path)
         if isinstance(base_obj, list):
             self.assertTrue(any(True for v in base_obj if key in v and v[key] == value))
         elif isinstance(base_obj, dict):
             self.assertTrue(key in base_obj)
             self.assertEqual(base_obj[key], value)
 
     def test_dhcp_single_pool_range(self):
         shared_net_name = 'SMOKE-1'
 
         range_0_start = inc_ip(subnet, 10)
         range_0_stop  = inc_ip(subnet, 20)
         range_1_start = inc_ip(subnet, 40)
         range_1_stop  = inc_ip(subnet, 50)
 
         pool = base_path + ['shared-network-name', shared_net_name, 'subnet', subnet]
         # we use the first subnet IP address as default gateway
         self.cli_set(pool + ['default-router', router])
         self.cli_set(pool + ['name-server', dns_1])
         self.cli_set(pool + ['name-server', dns_2])
         self.cli_set(pool + ['domain-name', domain_name])
 
         # check validate() - No DHCP address range or active static-mapping set
         with self.assertRaises(ConfigSessionError):
             self.cli_commit()
         self.cli_set(pool + ['range', '0', 'start', range_0_start])
         self.cli_set(pool + ['range', '0', 'stop', range_0_stop])
         self.cli_set(pool + ['range', '1', 'start', range_1_start])
         self.cli_set(pool + ['range', '1', 'stop', range_1_stop])
 
         # commit changes
         self.cli_commit()
 
         config = read_file(KEA4_CONF)
         obj = loads(config)
 
         self.verify_config_value(obj, ['Dhcp4', 'shared-networks'], 'name', shared_net_name)
         self.verify_config_value(obj, ['Dhcp4', 'shared-networks', 0, 'subnet4'], 'subnet', subnet)
         self.verify_config_value(obj, ['Dhcp4', 'shared-networks', 0, 'subnet4'], 'valid-lifetime', 86400)
         self.verify_config_value(obj, ['Dhcp4', 'shared-networks', 0, 'subnet4'], 'max-valid-lifetime', 86400)
 
         # Verify options
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'option-data'],
                 {'name': 'domain-name', 'data': domain_name})
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'option-data'],
                 {'name': 'domain-name-servers', 'data': f'{dns_1}, {dns_2}'})
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'option-data'],
                 {'name': 'routers', 'data': router})
 
         # Verify pools
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'pools'],
                 {'pool': f'{range_0_start} - {range_0_stop}'})
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'pools'],
                 {'pool': f'{range_1_start} - {range_1_stop}'})
 
         # Check for running process
         self.assertTrue(process_named_running(PROCESS_NAME))
 
     def test_dhcp_single_pool_options(self):
         shared_net_name = 'SMOKE-0815'
 
         range_0_start       = inc_ip(subnet, 10)
         range_0_stop        = inc_ip(subnet, 20)
         smtp_server         = '1.2.3.4'
         time_server         = '4.3.2.1'
         tftp_server         = 'tftp.vyos.io'
         search_domains      = ['foo.vyos.net', 'bar.vyos.net']
         bootfile_name       = 'vyos'
         bootfile_server     = '192.0.2.1'
         wpad                = 'http://wpad.vyos.io/foo/bar'
         server_identifier   = bootfile_server
         ipv6_only_preferred = '300'
 
         pool = base_path + ['shared-network-name', shared_net_name, 'subnet', subnet]
         # we use the first subnet IP address as default gateway
         self.cli_set(pool + ['default-router', router])
         self.cli_set(pool + ['name-server', dns_1])
         self.cli_set(pool + ['name-server', dns_2])
         self.cli_set(pool + ['domain-name', domain_name])
         self.cli_set(pool + ['ip-forwarding'])
         self.cli_set(pool + ['smtp-server', smtp_server])
         self.cli_set(pool + ['pop-server', smtp_server])
         self.cli_set(pool + ['time-server', time_server])
         self.cli_set(pool + ['tftp-server-name', tftp_server])
         for search in search_domains:
             self.cli_set(pool + ['domain-search', search])
         self.cli_set(pool + ['bootfile-name', bootfile_name])
         self.cli_set(pool + ['bootfile-server', bootfile_server])
         self.cli_set(pool + ['wpad-url', wpad])
         self.cli_set(pool + ['server-identifier', server_identifier])
 
         self.cli_set(pool + ['static-route', '10.0.0.0/24', 'next-hop', '192.0.2.1'])
         self.cli_set(pool + ['ipv6-only-preferred', ipv6_only_preferred])
         self.cli_set(pool + ['time-zone', 'Europe/London'])
 
         # check validate() - No DHCP address range or active static-mapping set
         with self.assertRaises(ConfigSessionError):
             self.cli_commit()
         self.cli_set(pool + ['range', '0', 'start', range_0_start])
         self.cli_set(pool + ['range', '0', 'stop', range_0_stop])
 
         # commit changes
         self.cli_commit()
 
         config = read_file(KEA4_CONF)
         obj = loads(config)
 
         self.verify_config_value(obj, ['Dhcp4', 'shared-networks'], 'name', shared_net_name)
         self.verify_config_value(obj, ['Dhcp4', 'shared-networks', 0, 'subnet4'], 'subnet', subnet)
         self.verify_config_value(obj, ['Dhcp4', 'shared-networks', 0, 'subnet4'], 'boot-file-name', bootfile_name)
         self.verify_config_value(obj, ['Dhcp4', 'shared-networks', 0, 'subnet4'], 'next-server', bootfile_server)
         self.verify_config_value(obj, ['Dhcp4', 'shared-networks', 0, 'subnet4'], 'valid-lifetime', 86400)
         self.verify_config_value(obj, ['Dhcp4', 'shared-networks', 0, 'subnet4'], 'max-valid-lifetime', 86400)
 
         # Verify options
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'option-data'],
                 {'name': 'domain-name', 'data': domain_name})
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'option-data'],
                 {'name': 'domain-name-servers', 'data': f'{dns_1}, {dns_2}'})
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'option-data'],
                 {'name': 'domain-search', 'data': ', '.join(search_domains)})
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'option-data'],
                 {'name': 'pop-server', 'data': smtp_server})
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'option-data'],
                 {'name': 'smtp-server', 'data': smtp_server})
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'option-data'],
                 {'name': 'time-servers', 'data': time_server})
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'option-data'],
                 {'name': 'routers', 'data': router})
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'option-data'],
                 {'name': 'dhcp-server-identifier', 'data': server_identifier})
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'option-data'],
                 {'name': 'tftp-server-name', 'data': tftp_server})
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'option-data'],
                 {'name': 'wpad-url', 'data': wpad})
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'option-data'],
                 {'name': 'rfc3442-static-route', 'data': '24,10,0,0,192,0,2,1, 0,192,0,2,1'})
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'option-data'],
                 {'name': 'windows-static-route', 'data': '24,10,0,0,192,0,2,1'})
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'option-data'],
                 {'name': 'v6-only-preferred', 'data': ipv6_only_preferred})
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'option-data'],
                 {'name': 'ip-forwarding', 'data': "true"})
 
         # Time zone
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'option-data'],
                 {'name': 'pcode', 'data': 'GMT0BST,M3.5.0/1,M10.5.0'})
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'option-data'],
                 {'name': 'tcode', 'data': 'Europe/London'})
 
         # Verify pools
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'pools'],
                 {'pool': f'{range_0_start} - {range_0_stop}'})
 
         # Check for running process
         self.assertTrue(process_named_running(PROCESS_NAME))
 
     def test_dhcp_single_pool_static_mapping(self):
         shared_net_name = 'SMOKE-2'
         domain_name = 'private'
 
         pool = base_path + ['shared-network-name', shared_net_name, 'subnet', subnet]
         # we use the first subnet IP address as default gateway
         self.cli_set(pool + ['default-router', router])
         self.cli_set(pool + ['name-server', dns_1])
         self.cli_set(pool + ['name-server', dns_2])
         self.cli_set(pool + ['domain-name', domain_name])
 
         # check validate() - No DHCP address range or active static-mapping set
         with self.assertRaises(ConfigSessionError):
             self.cli_commit()
 
         client_base = 10
         for client in ['client1', 'client2', 'client3']:
             mac = '00:50:00:00:00:{}'.format(client_base)
-            self.cli_set(pool + ['static-mapping', client, 'mac-address', mac])
+            self.cli_set(pool + ['static-mapping', client, 'mac', mac])
             self.cli_set(pool + ['static-mapping', client, 'ip-address', inc_ip(subnet, client_base)])
             client_base += 1
 
+        # cannot have both mac-address and duid set
+        with self.assertRaises(ConfigSessionError):
+            self.cli_set(pool + ['static-mapping', 'client1', 'duid', '00:01:00:01:12:34:56:78:aa:bb:cc:dd:ee:11'])
+            self.cli_commit()
+        self.cli_delete(pool + ['static-mapping', 'client1', 'duid'])
+
         # commit changes
         self.cli_commit()
 
         config = read_file(KEA4_CONF)
         obj = loads(config)
 
         self.verify_config_value(obj, ['Dhcp4', 'shared-networks'], 'name', shared_net_name)
         self.verify_config_value(obj, ['Dhcp4', 'shared-networks', 0, 'subnet4'], 'subnet', subnet)
         self.verify_config_value(obj, ['Dhcp4', 'shared-networks', 0, 'subnet4'], 'valid-lifetime', 86400)
         self.verify_config_value(obj, ['Dhcp4', 'shared-networks', 0, 'subnet4'], 'max-valid-lifetime', 86400)
 
         # Verify options
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'option-data'],
                 {'name': 'domain-name', 'data': domain_name})
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'option-data'],
                 {'name': 'domain-name-servers', 'data': f'{dns_1}, {dns_2}'})
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'option-data'],
                 {'name': 'routers', 'data': router})
 
         client_base = 10
         for client in ['client1', 'client2', 'client3']:
             mac = '00:50:00:00:00:{}'.format(client_base)
             ip = inc_ip(subnet, client_base)
 
             self.verify_config_object(
                     obj,
                     ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'reservations'],
-                    {'hw-address': mac, 'ip-address': ip})
+                    {'hostname': client, 'hw-address': mac, 'ip-address': ip})
 
             client_base += 1
 
         # Check for running process
         self.assertTrue(process_named_running(PROCESS_NAME))
 
     def test_dhcp_multiple_pools(self):
         lease_time = '14400'
 
         for network in ['0', '1', '2', '3']:
             shared_net_name = f'VyOS-SMOKETEST-{network}'
             subnet = f'192.0.{network}.0/24'
             router = inc_ip(subnet, 1)
             dns_1 = inc_ip(subnet, 2)
 
             range_0_start = inc_ip(subnet, 10)
             range_0_stop  = inc_ip(subnet, 20)
             range_1_start = inc_ip(subnet, 30)
             range_1_stop  = inc_ip(subnet, 40)
 
             pool = base_path + ['shared-network-name', shared_net_name, 'subnet', subnet]
             # we use the first subnet IP address as default gateway
             self.cli_set(pool + ['default-router', router])
             self.cli_set(pool + ['name-server', dns_1])
             self.cli_set(pool + ['domain-name', domain_name])
             self.cli_set(pool + ['lease', lease_time])
 
             self.cli_set(pool + ['range', '0', 'start', range_0_start])
             self.cli_set(pool + ['range', '0', 'stop', range_0_stop])
             self.cli_set(pool + ['range', '1', 'start', range_1_start])
             self.cli_set(pool + ['range', '1', 'stop', range_1_stop])
 
             client_base = 60
             for client in ['client1', 'client2', 'client3', 'client4']:
                 mac = '02:50:00:00:00:{}'.format(client_base)
-                self.cli_set(pool + ['static-mapping', client, 'mac-address', mac])
+                self.cli_set(pool + ['static-mapping', client, 'mac', mac])
                 self.cli_set(pool + ['static-mapping', client, 'ip-address', inc_ip(subnet, client_base)])
                 client_base += 1
 
         # commit changes
         self.cli_commit()
 
         config = read_file(KEA4_CONF)
         obj = loads(config)
 
         for network in ['0', '1', '2', '3']:
             shared_net_name = f'VyOS-SMOKETEST-{network}'
             subnet = f'192.0.{network}.0/24'
             router = inc_ip(subnet, 1)
             dns_1 = inc_ip(subnet, 2)
 
             range_0_start = inc_ip(subnet, 10)
             range_0_stop  = inc_ip(subnet, 20)
             range_1_start = inc_ip(subnet, 30)
             range_1_stop  = inc_ip(subnet, 40)
 
             self.verify_config_value(obj, ['Dhcp4', 'shared-networks'], 'name', shared_net_name)
             self.verify_config_value(obj, ['Dhcp4', 'shared-networks', int(network), 'subnet4'], 'subnet', subnet)
             self.verify_config_value(obj, ['Dhcp4', 'shared-networks', int(network), 'subnet4'], 'valid-lifetime', int(lease_time))
             self.verify_config_value(obj, ['Dhcp4', 'shared-networks', int(network), 'subnet4'], 'max-valid-lifetime', int(lease_time))
 
             self.verify_config_object(
                     obj,
                     ['Dhcp4', 'shared-networks', int(network), 'subnet4', 0, 'option-data'],
                     {'name': 'domain-name', 'data': domain_name})
             self.verify_config_object(
                     obj,
                     ['Dhcp4', 'shared-networks', int(network), 'subnet4', 0, 'option-data'],
                     {'name': 'domain-name-servers', 'data': dns_1})
             self.verify_config_object(
                     obj,
                     ['Dhcp4', 'shared-networks', int(network), 'subnet4', 0, 'option-data'],
                     {'name': 'routers', 'data': router})
 
             self.verify_config_object(
                     obj,
                     ['Dhcp4', 'shared-networks', int(network), 'subnet4', 0, 'pools'],
                     {'pool': f'{range_0_start} - {range_0_stop}'})
             self.verify_config_object(
                     obj,
                     ['Dhcp4', 'shared-networks', int(network), 'subnet4', 0, 'pools'],
                     {'pool': f'{range_1_start} - {range_1_stop}'})
 
             client_base = 60
             for client in ['client1', 'client2', 'client3', 'client4']:
                 mac = '02:50:00:00:00:{}'.format(client_base)
                 ip = inc_ip(subnet, client_base)
 
                 self.verify_config_object(
                         obj,
                         ['Dhcp4', 'shared-networks', int(network), 'subnet4', 0, 'reservations'],
-                        {'hw-address': mac, 'ip-address': ip})
+                        {'hostname': client, 'hw-address': mac, 'ip-address': ip})
 
                 client_base += 1
 
         # Check for running process
         self.assertTrue(process_named_running(PROCESS_NAME))
 
     def test_dhcp_exclude_not_in_range(self):
         # T3180: verify else path when slicing DHCP ranges and exclude address
         # is not part of the DHCP range
         range_0_start = inc_ip(subnet, 10)
         range_0_stop  = inc_ip(subnet, 20)
 
         pool = base_path + ['shared-network-name', 'EXCLUDE-TEST', 'subnet', subnet]
         self.cli_set(pool + ['default-router', router])
         self.cli_set(pool + ['exclude', router])
         self.cli_set(pool + ['range', '0', 'start', range_0_start])
         self.cli_set(pool + ['range', '0', 'stop', range_0_stop])
 
         # commit changes
         self.cli_commit()
 
         config = read_file(KEA4_CONF)
         obj = loads(config)
 
         self.verify_config_value(obj, ['Dhcp4', 'shared-networks'], 'name', 'EXCLUDE-TEST')
         self.verify_config_value(obj, ['Dhcp4', 'shared-networks', 0, 'subnet4'], 'subnet', subnet)
 
         # Verify options
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'option-data'],
                 {'name': 'routers', 'data': router})
 
         # Verify pools
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'pools'],
                 {'pool': f'{range_0_start} - {range_0_stop}'})
 
         # Check for running process
         self.assertTrue(process_named_running(PROCESS_NAME))
 
     def test_dhcp_exclude_in_range(self):
         # T3180: verify else path when slicing DHCP ranges and exclude address
         # is not part of the DHCP range
         range_0_start = inc_ip(subnet, 10)
         range_0_stop  = inc_ip(subnet, 100)
 
         # the DHCP exclude addresse is blanked out of the range which is done
         # by slicing one range into two ranges
         exclude_addr  = inc_ip(range_0_start, 20)
         range_0_stop_excl = dec_ip(exclude_addr, 1)
         range_0_start_excl = inc_ip(exclude_addr, 1)
 
         pool = base_path + ['shared-network-name', 'EXCLUDE-TEST-2', 'subnet', subnet]
         self.cli_set(pool + ['default-router', router])
         self.cli_set(pool + ['exclude', exclude_addr])
         self.cli_set(pool + ['range', '0', 'start', range_0_start])
         self.cli_set(pool + ['range', '0', 'stop', range_0_stop])
 
         # commit changes
         self.cli_commit()
 
         config = read_file(KEA4_CONF)
         obj = loads(config)
 
         self.verify_config_value(obj, ['Dhcp4', 'shared-networks'], 'name', 'EXCLUDE-TEST-2')
         self.verify_config_value(obj, ['Dhcp4', 'shared-networks', 0, 'subnet4'], 'subnet', subnet)
 
         # Verify options
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'option-data'],
                 {'name': 'routers', 'data': router})
 
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'pools'],
                 {'pool': f'{range_0_start} - {range_0_stop_excl}'})
 
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'pools'],
                 {'pool': f'{range_0_start_excl} - {range_0_stop}'})
 
         # Check for running process
         self.assertTrue(process_named_running(PROCESS_NAME))
 
     def test_dhcp_relay_server(self):
         # Listen on specific address and return DHCP leases from a non
         # directly connected pool
         self.cli_set(base_path + ['listen-address', router])
 
         relay_subnet = '10.0.0.0/16'
         relay_router = inc_ip(relay_subnet, 1)
 
         range_0_start = '10.0.1.0'
         range_0_stop  = '10.0.250.255'
 
         pool = base_path + ['shared-network-name', 'RELAY', 'subnet', relay_subnet]
         self.cli_set(pool + ['default-router', relay_router])
         self.cli_set(pool + ['range', '0', 'start', range_0_start])
         self.cli_set(pool + ['range', '0', 'stop', range_0_stop])
 
         # commit changes
         self.cli_commit()
 
         config = read_file(KEA4_CONF)
         obj = loads(config)
 
         self.verify_config_value(obj, ['Dhcp4', 'shared-networks'], 'name', 'RELAY')
         self.verify_config_value(obj, ['Dhcp4', 'shared-networks', 0, 'subnet4'], 'subnet', relay_subnet)
 
         # Verify options
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'option-data'],
                 {'name': 'routers', 'data': relay_router})
 
         # Verify pools
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'pools'],
                 {'pool': f'{range_0_start} - {range_0_stop}'})
 
         # Check for running process
         self.assertTrue(process_named_running(PROCESS_NAME))
 
     def test_dhcp_failover(self):
         shared_net_name = 'FAILOVER'
         failover_name = 'VyOS-Failover'
 
         range_0_start = inc_ip(subnet, 10)
         range_0_stop  = inc_ip(subnet, 20)
 
         pool = base_path + ['shared-network-name', shared_net_name, 'subnet', subnet]
         # we use the first subnet IP address as default gateway
         self.cli_set(pool + ['default-router', router])
 
         # check validate() - No DHCP address range or active static-mapping set
         with self.assertRaises(ConfigSessionError):
             self.cli_commit()
         self.cli_set(pool + ['range', '0', 'start', range_0_start])
         self.cli_set(pool + ['range', '0', 'stop', range_0_stop])
 
         # failover
         failover_local = router
         failover_remote = inc_ip(router, 1)
 
         self.cli_set(base_path + ['failover', 'source-address', failover_local])
         self.cli_set(base_path + ['failover', 'name', failover_name])
         self.cli_set(base_path + ['failover', 'remote', failover_remote])
         self.cli_set(base_path + ['failover', 'status', 'primary'])
 
         # commit changes
         self.cli_commit()
 
         config = read_file(KEA4_CONF)
         obj = loads(config)
 
         # Verify failover
         self.verify_config_value(obj, ['Dhcp4', 'control-socket'], 'socket-name', KEA4_CTRL)
 
         self.verify_config_object(
             obj,
             ['Dhcp4', 'hooks-libraries', 0, 'parameters', 'high-availability', 0, 'peers'],
             {'name': os.uname()[1], 'url': f'http://{failover_local}:647/', 'role': 'primary', 'auto-failover': True})
 
         self.verify_config_object(
             obj,
             ['Dhcp4', 'hooks-libraries', 0, 'parameters', 'high-availability', 0, 'peers'],
             {'name': failover_name, 'url': f'http://{failover_remote}:647/', 'role': 'standby', 'auto-failover': True})
 
         self.verify_config_value(obj, ['Dhcp4', 'shared-networks'], 'name', shared_net_name)
         self.verify_config_value(obj, ['Dhcp4', 'shared-networks', 0, 'subnet4'], 'subnet', subnet)
 
         # Verify options
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'option-data'],
                 {'name': 'routers', 'data': router})
 
         # Verify pools
         self.verify_config_object(
                 obj,
                 ['Dhcp4', 'shared-networks', 0, 'subnet4', 0, 'pools'],
                 {'pool': f'{range_0_start} - {range_0_stop}'})
 
         # Check for running process
         self.assertTrue(process_named_running(PROCESS_NAME))
         self.assertTrue(process_named_running(CTRL_PROCESS_NAME))
 
 if __name__ == '__main__':
     unittest.main(verbosity=2)
diff --git a/smoketest/scripts/cli/test_service_dhcpv6-server.py b/smoketest/scripts/cli/test_service_dhcpv6-server.py
index 175a67537..f163cc69a 100755
--- a/smoketest/scripts/cli/test_service_dhcpv6-server.py
+++ b/smoketest/scripts/cli/test_service_dhcpv6-server.py
@@ -1,264 +1,273 @@
 #!/usr/bin/env python3
 #
 # Copyright (C) 2020-2023 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
 # published by the Free Software Foundation.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 import unittest
 
 from json import loads
 
 from base_vyostest_shim import VyOSUnitTestSHIM
 
 from vyos.configsession import ConfigSessionError
 from vyos.template import inc_ip
 from vyos.utils.process import process_named_running
 from vyos.utils.file import read_file
 
 PROCESS_NAME = 'kea-dhcp6'
 KEA6_CONF = '/run/kea/kea-dhcp6.conf'
 base_path = ['service', 'dhcpv6-server']
 
 subnet = '2001:db8:f00::/64'
 dns_1 = '2001:db8::1'
 dns_2 = '2001:db8::2'
 domain = 'vyos.net'
 nis_servers = ['2001:db8:ffff::1', '2001:db8:ffff::2']
 interface = 'eth0'
 interface_addr = inc_ip(subnet, 1) + '/64'
 
 class TestServiceDHCPv6Server(VyOSUnitTestSHIM.TestCase):
     @classmethod
     def setUpClass(cls):
         super(TestServiceDHCPv6Server, cls).setUpClass()
+        # Clear out current configuration to allow running this test on a live system
+        cls.cli_delete(cls, base_path)
+
         cls.cli_set(cls, ['interfaces', 'ethernet', interface, 'address', interface_addr])
 
     @classmethod
     def tearDownClass(cls):
         cls.cli_delete(cls, ['interfaces', 'ethernet', interface, 'address', interface_addr])
         cls.cli_commit(cls)
 
         super(TestServiceDHCPv6Server, cls).tearDownClass()
 
     def tearDown(self):
         self.cli_delete(base_path)
         self.cli_commit()
 
     def walk_path(self, obj, path):
         current = obj
 
         for i, key in enumerate(path):
             if isinstance(key, str):
                 self.assertTrue(isinstance(current, dict), msg=f'Failed path: {path}')
                 self.assertTrue(key in current, msg=f'Failed path: {path}')
             elif isinstance(key, int):
                 self.assertTrue(isinstance(current, list), msg=f'Failed path: {path}')
                 self.assertTrue(0 <= key < len(current), msg=f'Failed path: {path}')
             else:
                 assert False, "Invalid type"
 
             current = current[key]
 
         return current
 
     def verify_config_object(self, obj, path, value):
         base_obj = self.walk_path(obj, path)
         self.assertTrue(isinstance(base_obj, list))
         self.assertTrue(any(True for v in base_obj if v == value))
 
     def verify_config_value(self, obj, path, key, value):
         base_obj = self.walk_path(obj, path)
         if isinstance(base_obj, list):
             self.assertTrue(any(True for v in base_obj if key in v and v[key] == value))
         elif isinstance(base_obj, dict):
             self.assertTrue(key in base_obj)
             self.assertEqual(base_obj[key], value)
 
     def test_single_pool(self):
         shared_net_name = 'SMOKE-1'
         search_domains  = ['foo.vyos.net', 'bar.vyos.net']
         lease_time = '1200'
         max_lease_time = '72000'
         min_lease_time = '600'
         preference = '10'
         sip_server = 'sip.vyos.net'
         sntp_server = inc_ip(subnet, 100)
         range_start = inc_ip(subnet, 256)  # ::100
         range_stop = inc_ip(subnet, 65535) # ::ffff
 
         pool = base_path + ['shared-network-name', shared_net_name, 'subnet', subnet]
 
         self.cli_set(base_path + ['preference', preference])
 
         # we use the first subnet IP address as default gateway
         self.cli_set(pool + ['name-server', dns_1])
         self.cli_set(pool + ['name-server', dns_2])
         self.cli_set(pool + ['name-server', dns_2])
         self.cli_set(pool + ['lease-time', 'default', lease_time])
         self.cli_set(pool + ['lease-time', 'maximum', max_lease_time])
         self.cli_set(pool + ['lease-time', 'minimum', min_lease_time])
         self.cli_set(pool + ['nis-domain', domain])
         self.cli_set(pool + ['nisplus-domain', domain])
         self.cli_set(pool + ['sip-server', sip_server])
         self.cli_set(pool + ['sntp-server', sntp_server])
         self.cli_set(pool + ['address-range', 'start', range_start, 'stop', range_stop])
 
         for server in nis_servers:
             self.cli_set(pool + ['nis-server', server])
             self.cli_set(pool + ['nisplus-server', server])
 
         for search in search_domains:
             self.cli_set(pool + ['domain-search', search])
 
         client_base = 1
         for client in ['client1', 'client2', 'client3']:
-            cid = '00:01:00:01:12:34:56:78:aa:bb:cc:dd:ee:{}'.format(client_base)
-            self.cli_set(pool + ['static-mapping', client, 'identifier', cid])
+            duid = f'00:01:00:01:12:34:56:78:aa:bb:cc:dd:ee:{client_base:02}'
+            self.cli_set(pool + ['static-mapping', client, 'duid', duid])
             self.cli_set(pool + ['static-mapping', client, 'ipv6-address', inc_ip(subnet, client_base)])
             self.cli_set(pool + ['static-mapping', client, 'ipv6-prefix', inc_ip(subnet, client_base << 64) + '/64'])
             client_base += 1
 
+        # cannot have both mac-address and duid set
+        with self.assertRaises(ConfigSessionError):
+            self.cli_set(pool + ['static-mapping', 'client1', 'mac', '00:50:00:00:00:11'])
+            self.cli_commit()
+        self.cli_delete(pool + ['static-mapping', 'client1', 'mac'])
+
         # commit changes
         self.cli_commit()
 
         config = read_file(KEA6_CONF)
         obj = loads(config)
 
         self.verify_config_value(obj, ['Dhcp6', 'shared-networks'], 'name', shared_net_name)
         self.verify_config_value(obj, ['Dhcp6', 'shared-networks', 0, 'subnet6'], 'subnet', subnet)
         self.verify_config_value(obj, ['Dhcp6', 'shared-networks', 0, 'subnet6'], 'valid-lifetime', int(lease_time))
         self.verify_config_value(obj, ['Dhcp6', 'shared-networks', 0, 'subnet6'], 'min-valid-lifetime', int(min_lease_time))
         self.verify_config_value(obj, ['Dhcp6', 'shared-networks', 0, 'subnet6'], 'max-valid-lifetime', int(max_lease_time))
 
         # Verify options
         self.verify_config_object(
                 obj,
                 ['Dhcp6', 'shared-networks', 0, 'subnet6', 0, 'option-data'],
                 {'name': 'dns-servers', 'data': f'{dns_1}, {dns_2}'})
         self.verify_config_object(
                 obj,
                 ['Dhcp6', 'shared-networks', 0, 'subnet6', 0, 'option-data'],
                 {'name': 'domain-search', 'data': ", ".join(search_domains)})
         self.verify_config_object(
                 obj,
                 ['Dhcp6', 'shared-networks', 0, 'subnet6', 0, 'option-data'],
                 {'name': 'nis-domain-name', 'data': domain})
         self.verify_config_object(
                 obj,
                 ['Dhcp6', 'shared-networks', 0, 'subnet6', 0, 'option-data'],
                 {'name': 'nis-servers', 'data': ", ".join(nis_servers)})
         self.verify_config_object(
                 obj,
                 ['Dhcp6', 'shared-networks', 0, 'subnet6', 0, 'option-data'],
                 {'name': 'nisp-domain-name', 'data': domain})
         self.verify_config_object(
                 obj,
                 ['Dhcp6', 'shared-networks', 0, 'subnet6', 0, 'option-data'],
                 {'name': 'nisp-servers', 'data': ", ".join(nis_servers)})
         self.verify_config_object(
                 obj,
                 ['Dhcp6', 'shared-networks', 0, 'subnet6', 0, 'option-data'],
                 {'name': 'sntp-servers', 'data': sntp_server})
         self.verify_config_object(
                 obj,
                 ['Dhcp6', 'shared-networks', 0, 'subnet6', 0, 'option-data'],
                 {'name': 'sip-server-dns', 'data': sip_server})
 
         # Verify pools
         self.verify_config_object(
                 obj,
                 ['Dhcp6', 'shared-networks', 0, 'subnet6', 0, 'pools'],
                 {'pool': f'{range_start} - {range_stop}'})
 
         client_base = 1
         for client in ['client1', 'client2', 'client3']:
-            cid = '00:01:00:01:12:34:56:78:aa:bb:cc:dd:ee:{}'.format(client_base)
+            duid = f'00:01:00:01:12:34:56:78:aa:bb:cc:dd:ee:{client_base:02}'
             ip = inc_ip(subnet, client_base)
             prefix = inc_ip(subnet, client_base << 64) + '/64'
 
             self.verify_config_object(
                     obj,
                     ['Dhcp6', 'shared-networks', 0, 'subnet6', 0, 'reservations'],
-                    {'duid': cid, 'ip-addresses': [ip], 'prefixes': [prefix]})
+                    {'hostname': client, 'duid': duid, 'ip-addresses': [ip], 'prefixes': [prefix]})
 
             client_base += 1
 
         # Check for running process
         self.assertTrue(process_named_running(PROCESS_NAME))
 
 
     def test_prefix_delegation(self):
         shared_net_name = 'SMOKE-2'
         range_start = inc_ip(subnet, 256)  # ::100
         range_stop = inc_ip(subnet, 65535) # ::ffff
         delegate_start = '2001:db8:ee::'
         delegate_len = '64'
         prefix_len = '56'
 
         pool = base_path + ['shared-network-name', shared_net_name, 'subnet', subnet]
 
         self.cli_set(pool + ['address-range', 'start', range_start, 'stop', range_stop])
         self.cli_set(pool + ['prefix-delegation', 'prefix', delegate_start, 'delegated-length', delegate_len])
         self.cli_set(pool + ['prefix-delegation', 'prefix', delegate_start, 'prefix-length', prefix_len])
 
         # commit changes
         self.cli_commit()
 
         config = read_file(KEA6_CONF)
         obj = loads(config)
 
         self.verify_config_value(obj, ['Dhcp6', 'shared-networks'], 'name', shared_net_name)
         self.verify_config_value(obj, ['Dhcp6', 'shared-networks', 0, 'subnet6'], 'subnet', subnet)
 
         # Verify pools
         self.verify_config_object(
                 obj,
                 ['Dhcp6', 'shared-networks', 0, 'subnet6', 0, 'pools'],
                 {'pool': f'{range_start} - {range_stop}'})
 
         self.verify_config_object(
                 obj,
                 ['Dhcp6', 'shared-networks', 0, 'subnet6', 0, 'pd-pools'],
                 {'prefix': delegate_start, 'prefix-len': int(prefix_len), 'delegated-len': int(delegate_len)})
 
         # Check for running process
         self.assertTrue(process_named_running(PROCESS_NAME))
 
     def test_global_nameserver(self):
         shared_net_name = 'SMOKE-3'
         ns_global_1 = '2001:db8::1111'
         ns_global_2 = '2001:db8::2222'
 
         self.cli_set(base_path + ['global-parameters', 'name-server', ns_global_1])
         self.cli_set(base_path + ['global-parameters', 'name-server', ns_global_2])
         self.cli_set(base_path + ['shared-network-name', shared_net_name, 'subnet', subnet])
 
         # commit changes
         self.cli_commit()
 
         config = read_file(KEA6_CONF)
         obj = loads(config)
 
         self.verify_config_value(obj, ['Dhcp6', 'shared-networks'], 'name', shared_net_name)
         self.verify_config_value(obj, ['Dhcp6', 'shared-networks', 0, 'subnet6'], 'subnet', subnet)
 
         self.verify_config_object(
                 obj,
                 ['Dhcp6', 'option-data'],
                 {'name': 'dns-servers', "code": 23, "space": "dhcp6", "csv-format": True, 'data': f'{ns_global_1}, {ns_global_2}'})
 
         # Check for running process
         self.assertTrue(process_named_running(PROCESS_NAME))
 
 if __name__ == '__main__':
     unittest.main(verbosity=2)
diff --git a/src/conf_mode/dhcp_server.py b/src/conf_mode/dhcp_server.py
index e06a3c8a8..c1308cda7 100755
--- a/src/conf_mode/dhcp_server.py
+++ b/src/conf_mode/dhcp_server.py
@@ -1,376 +1,376 @@
 #!/usr/bin/env python3
 #
 # Copyright (C) 2018-2023 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
 # published by the Free Software Foundation.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 import os
 
 from ipaddress import ip_address
 from ipaddress import ip_network
-from netaddr import IPAddress
 from netaddr import IPRange
 from sys import exit
 
 from vyos.config import Config
 from vyos.pki import wrap_certificate
 from vyos.pki import wrap_private_key
 from vyos.template import render
 from vyos.utils.dict import dict_search
 from vyos.utils.dict import dict_search_args
 from vyos.utils.file import write_file
 from vyos.utils.process import call
 from vyos.utils.process import run
 from vyos.utils.network import is_subnet_connected
 from vyos.utils.network import is_addr_assigned
 from vyos import ConfigError
 from vyos import airbag
 airbag.enable()
 
 ctrl_config_file = '/run/kea/kea-ctrl-agent.conf'
 ctrl_socket = '/run/kea/dhcp4-ctrl-socket'
 config_file = '/run/kea/kea-dhcp4.conf'
 lease_file = '/config/dhcp4.leases'
 systemd_override = r'/run/systemd/system/kea-ctrl-agent.service.d/10-override.conf'
 
 ca_cert_file = '/run/kea/kea-failover-ca.pem'
 cert_file = '/run/kea/kea-failover.pem'
 cert_key_file = '/run/kea/kea-failover-key.pem'
 
 def dhcp_slice_range(exclude_list, range_dict):
     """
     This function is intended to slice a DHCP range. What does it mean?
 
     Lets assume we have a DHCP range from '192.0.2.1' to '192.0.2.100'
     but want to exclude address '192.0.2.74' and '192.0.2.75'. We will
     pass an input 'range_dict' in the format:
       {'start' : '192.0.2.1', 'stop' : '192.0.2.100' }
     and we will receive an output list of:
       [{'start' : '192.0.2.1' , 'stop' : '192.0.2.73'  },
        {'start' : '192.0.2.76', 'stop' : '192.0.2.100' }]
     The resulting list can then be used in turn to build the proper dhcpd
     configuration file.
     """
     output = []
     # exclude list must be sorted for this to work
     exclude_list = sorted(exclude_list)
     range_start = range_dict['start']
     range_stop = range_dict['stop']
     range_last_exclude = ''
 
     for e in exclude_list:
         if (ip_address(e) >= ip_address(range_start)) and \
            (ip_address(e) <= ip_address(range_stop)):
             range_last_exclude = e
 
     for e in exclude_list:
         if (ip_address(e) >= ip_address(range_start)) and \
            (ip_address(e) <= ip_address(range_stop)):
 
             # Build new address range ending one address before exclude address
             r = {
                 'start' : range_start,
                 'stop' : str(ip_address(e) -1)
             }
             # On the next run our address range will start one address after
             # the exclude address
             range_start = str(ip_address(e) + 1)
 
             # on subsequent exclude addresses we can not
             # append them to our output
             if not (ip_address(r['start']) > ip_address(r['stop'])):
                 # Everything is fine, add range to result
                 output.append(r)
 
             # Take care of last IP address range spanning from the last exclude
             # address (+1) to the end of the initial configured range
             if ip_address(e) == ip_address(range_last_exclude):
                 r = {
                   'start': str(ip_address(e) + 1),
                   'stop': str(range_stop)
                 }
                 if not (ip_address(r['start']) > ip_address(r['stop'])):
                     output.append(r)
         else:
           # if the excluded address was not part of the range, we simply return
           # the entire ranga again
           if not range_last_exclude:
               if range_dict not in output:
                   output.append(range_dict)
 
     return output
 
 def get_config(config=None):
     if config:
         conf = config
     else:
         conf = Config()
     base = ['service', 'dhcp-server']
     if not conf.exists(base):
         return None
 
     dhcp = conf.get_config_dict(base, key_mangling=('-', '_'),
                                 no_tag_node_value_mangle=True,
                                 get_first_key=True,
                                 with_recursive_defaults=True)
 
     if 'shared_network_name' in dhcp:
         for network, network_config in dhcp['shared_network_name'].items():
             if 'subnet' in network_config:
                 for subnet, subnet_config in network_config['subnet'].items():
                     # If exclude IP addresses are defined we need to slice them out of
                     # the defined ranges
                     if {'exclude', 'range'} <= set(subnet_config):
                         new_range_id = 0
                         new_range_dict = {}
                         for r, r_config in subnet_config['range'].items():
                             for slice in dhcp_slice_range(subnet_config['exclude'], r_config):
                                 new_range_dict.update({new_range_id : slice})
                                 new_range_id +=1
 
                         dhcp['shared_network_name'][network]['subnet'][subnet].update(
                                 {'range' : new_range_dict})
 
     if dict_search('failover.certificate', dhcp):
-        dhcp['pki'] = conf.get_config_dict(['pki'], key_mangling=('-', '_'), get_first_key=True, no_tag_node_value_mangle=True) 
+        dhcp['pki'] = conf.get_config_dict(['pki'], key_mangling=('-', '_'), get_first_key=True, no_tag_node_value_mangle=True)
 
     return dhcp
 
 def verify(dhcp):
     # bail out early - looks like removal from running config
     if not dhcp or 'disable' in dhcp:
         return None
 
     # If DHCP is enabled we need one share-network
     if 'shared_network_name' not in dhcp:
         raise ConfigError('No DHCP shared networks configured.\n' \
                           'At least one DHCP shared network must be configured.')
 
     # Inspect shared-network/subnet
     listen_ok = False
     subnets = []
     failover_ok = False
     shared_networks =  len(dhcp['shared_network_name'])
     disabled_shared_networks = 0
 
 
     # A shared-network requires a subnet definition
     for network, network_config in dhcp['shared_network_name'].items():
         if 'disable' in network_config:
             disabled_shared_networks += 1
 
         if 'subnet' not in network_config:
             raise ConfigError(f'No subnets defined for {network}. At least one\n' \
                               'lease subnet must be configured.')
 
         for subnet, subnet_config in network_config['subnet'].items():
             # All delivered static routes require a next-hop to be set
             if 'static_route' in subnet_config:
                 for route, route_option in subnet_config['static_route'].items():
                     if 'next_hop' not in route_option:
                         raise ConfigError(f'DHCP static-route "{route}" requires router to be defined!')
 
             # Check if DHCP address range is inside configured subnet declaration
             if 'range' in subnet_config:
                 networks = []
                 for range, range_config in subnet_config['range'].items():
                     if not {'start', 'stop'} <= set(range_config):
                         raise ConfigError(f'DHCP range "{range}" start and stop address must be defined!')
 
                     # Start/Stop address must be inside network
                     for key in ['start', 'stop']:
                         if ip_address(range_config[key]) not in ip_network(subnet):
                             raise ConfigError(f'DHCP range "{range}" {key} address not within shared-network "{network}, {subnet}"!')
 
                     # Stop address must be greater or equal to start address
                     if ip_address(range_config['stop']) < ip_address(range_config['start']):
                         raise ConfigError(f'DHCP range "{range}" stop address must be greater or equal\n' \
                                           'to the ranges start address!')
 
                     for network in networks:
                         start = range_config['start']
                         stop = range_config['stop']
                         if start in network:
                             raise ConfigError(f'Range "{range}" start address "{start}" already part of another range!')
                         if stop in network:
                             raise ConfigError(f'Range "{range}" stop address "{stop}" already part of another range!')
 
                     tmp = IPRange(range_config['start'], range_config['stop'])
                     networks.append(tmp)
 
             # Exclude addresses must be in bound
             if 'exclude' in subnet_config:
                 for exclude in subnet_config['exclude']:
                     if ip_address(exclude) not in ip_network(subnet):
                         raise ConfigError(f'Excluded IP address "{exclude}" not within shared-network "{network}, {subnet}"!')
 
             # At least one DHCP address range or static-mapping required
             if 'range' not in subnet_config and 'static_mapping' not in subnet_config:
                 raise ConfigError(f'No DHCP address range or active static-mapping configured\n' \
                                   f'within shared-network "{network}, {subnet}"!')
 
             if 'static_mapping' in subnet_config:
                 # Static mappings require just a MAC address (will use an IP from the dynamic pool if IP is not set)
                 for mapping, mapping_config in subnet_config['static_mapping'].items():
                     if 'ip_address' in mapping_config:
                         if ip_address(mapping_config['ip_address']) not in ip_network(subnet):
                             raise ConfigError(f'Configured static lease address for mapping "{mapping}" is\n' \
                                               f'not within shared-network "{network}, {subnet}"!')
 
-                        if 'mac_address' not in mapping_config:
-                            raise ConfigError(f'MAC address required for static mapping "{mapping}"\n' \
-                                              f'within shared-network "{network}, {subnet}"!')
+                        if ('mac' not in mapping_config and 'duid' not in mapping_config) or \
+                            ('mac' in mapping_config and 'duid' in mapping_config):
+                            raise ConfigError(f'Either MAC address or Client identifier (DUID) is required for '
+                                              f'static mapping "{mapping}" within shared-network "{network}, {subnet}"!')
 
             # There must be one subnet connected to a listen interface.
             # This only counts if the network itself is not disabled!
             if 'disable' not in network_config:
                 if is_subnet_connected(subnet, primary=False):
                     listen_ok = True
 
             # Subnets must be non overlapping
             if subnet in subnets:
                 raise ConfigError(f'Configured subnets must be unique! Subnet "{subnet}"\n'
                                    'defined multiple times!')
             subnets.append(subnet)
 
             # Check for overlapping subnets
             net = ip_network(subnet)
             for n in subnets:
                 net2 = ip_network(n)
                 if (net != net2):
                     if net.overlaps(net2):
                         raise ConfigError(f'Conflicting subnet ranges: "{net}" overlaps "{net2}"!')
 
     # Prevent 'disable' for shared-network if only one network is configured
     if (shared_networks - disabled_shared_networks) < 1:
         raise ConfigError(f'At least one shared network must be active!')
 
     if 'failover' in dhcp:
         for key in ['name', 'remote', 'source_address', 'status']:
             if key not in dhcp['failover']:
                 tmp = key.replace('_', '-')
                 raise ConfigError(f'DHCP failover requires "{tmp}" to be specified!')
 
         if len({'certificate', 'ca_certificate'} & set(dhcp['failover'])) == 1:
             raise ConfigError(f'DHCP secured failover requires both certificate and CA certificate')
 
         if 'certificate' in dhcp['failover']:
             cert_name = dhcp['failover']['certificate']
 
             if cert_name not in dhcp['pki']['certificate']:
                 raise ConfigError(f'Invalid certificate specified for DHCP failover')
 
             if not dict_search_args(dhcp['pki']['certificate'], cert_name, 'certificate'):
                 raise ConfigError(f'Invalid certificate specified for DHCP failover')
 
             if not dict_search_args(dhcp['pki']['certificate'], cert_name, 'private', 'key'):
                 raise ConfigError(f'Missing private key on certificate specified for DHCP failover')
 
         if 'ca_certificate' in dhcp['failover']:
             ca_cert_name = dhcp['failover']['ca_certificate']
             if ca_cert_name not in dhcp['pki']['ca']:
                 raise ConfigError(f'Invalid CA certificate specified for DHCP failover')
 
             if not dict_search_args(dhcp['pki']['ca'], ca_cert_name, 'certificate'):
                 raise ConfigError(f'Invalid CA certificate specified for DHCP failover')
 
     for address in (dict_search('listen_address', dhcp) or []):
         if is_addr_assigned(address):
             listen_ok = True
             # no need to probe further networks, we have one that is valid
             continue
         else:
             raise ConfigError(f'listen-address "{address}" not configured on any interface')
 
 
     if not listen_ok:
         raise ConfigError('None of the configured subnets have an appropriate primary IP address on any\n'
                           'broadcast interface configured, nor was there an explicit listen-address\n'
                           'configured for serving DHCP relay packets!')
 
     return None
 
 def generate(dhcp):
     # bail out early - looks like removal from running config
     if not dhcp or 'disable' in dhcp:
         return None
 
     dhcp['lease_file'] = lease_file
     dhcp['machine'] = os.uname().machine
 
     if not os.path.exists(lease_file):
         write_file(lease_file, '', user='_kea', group='vyattacfg', mode=0o755)
 
     for f in [cert_file, cert_key_file, ca_cert_file]:
         if os.path.exists(f):
             os.unlink(f)
 
     if 'failover' in dhcp:
         if 'certificate' in dhcp['failover']:
             cert_name = dhcp['failover']['certificate']
             cert_data = dhcp['pki']['certificate'][cert_name]['certificate']
             key_data = dhcp['pki']['certificate'][cert_name]['private']['key']
             write_file(cert_file, wrap_certificate(cert_data), user='_kea', mode=0o600)
             write_file(cert_key_file, wrap_private_key(key_data), user='_kea', mode=0o600)
 
             dhcp['failover']['cert_file'] = cert_file
             dhcp['failover']['cert_key_file'] = cert_key_file
 
         if 'ca_certificate' in dhcp['failover']:
             ca_cert_name = dhcp['failover']['ca_certificate']
             ca_cert_data = dhcp['pki']['ca'][ca_cert_name]['certificate']
             write_file(ca_cert_file, wrap_certificate(ca_cert_data), user='_kea', mode=0o600)
 
             dhcp['failover']['ca_cert_file'] = ca_cert_file
 
         render(systemd_override, 'dhcp-server/10-override.conf.j2', dhcp)
 
     render(ctrl_config_file, 'dhcp-server/kea-ctrl-agent.conf.j2', dhcp)
     render(config_file, 'dhcp-server/kea-dhcp4.conf.j2', dhcp)
 
     return None
 
 def apply(dhcp):
     services = ['kea-ctrl-agent', 'kea-dhcp4-server', 'kea-dhcp-ddns-server']
 
     if not dhcp or 'disable' in dhcp:
         for service in services:
             call(f'systemctl stop {service}.service')
 
         if os.path.exists(config_file):
             os.unlink(config_file)
 
         return None
 
     for service in services:
         action = 'restart'
 
         if service == 'kea-dhcp-ddns-server' and 'dynamic_dns_update' not in dhcp:
             action = 'stop'
 
         if service == 'kea-ctrl-agent' and 'failover' not in dhcp:
             action = 'stop'
 
         call(f'systemctl {action} {service}.service')
 
     return None
 
 if __name__ == '__main__':
     try:
         c = get_config()
         verify(c)
         generate(c)
         apply(c)
     except ConfigError as e:
         print(e)
         exit(1)
diff --git a/src/conf_mode/dhcpv6_server.py b/src/conf_mode/dhcpv6_server.py
index b01f510e5..f9da3d84a 100755
--- a/src/conf_mode/dhcpv6_server.py
+++ b/src/conf_mode/dhcpv6_server.py
@@ -1,208 +1,213 @@
 #!/usr/bin/env python3
 #
 # Copyright (C) 2018-2023 VyOS maintainers and contributors
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 or later as
 # published by the Free Software Foundation.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 import os
 
 from ipaddress import ip_address
 from ipaddress import ip_network
 from sys import exit
 
 from vyos.config import Config
 from vyos.template import render
 from vyos.template import is_ipv6
 from vyos.utils.process import call
 from vyos.utils.file import write_file
 from vyos.utils.dict import dict_search
 from vyos.utils.network import is_subnet_connected
 from vyos import ConfigError
 from vyos import airbag
 airbag.enable()
 
 config_file = '/run/kea/kea-dhcp6.conf'
 ctrl_socket = '/run/kea/dhcp6-ctrl-socket'
 lease_file = '/config/dhcp6.leases'
 
 def get_config(config=None):
     if config:
         conf = config
     else:
         conf = Config()
     base = ['service', 'dhcpv6-server']
     if not conf.exists(base):
         return None
 
     dhcpv6 = conf.get_config_dict(base, key_mangling=('-', '_'),
                                   get_first_key=True,
                                   no_tag_node_value_mangle=True)
     return dhcpv6
 
 def verify(dhcpv6):
     # bail out early - looks like removal from running config
     if not dhcpv6 or 'disable' in dhcpv6:
         return None
 
     # If DHCP is enabled we need one share-network
     if 'shared_network_name' not in dhcpv6:
         raise ConfigError('No DHCPv6 shared networks configured. At least '\
                           'one DHCPv6 shared network must be configured.')
 
     # Inspect shared-network/subnet
     subnets = []
     listen_ok = False
     for network, network_config in dhcpv6['shared_network_name'].items():
         # A shared-network requires a subnet definition
         if 'subnet' not in network_config:
             raise ConfigError(f'No DHCPv6 lease subnets configured for "{network}". '\
                               'At least one lease subnet must be configured for '\
                               'each shared network!')
 
         for subnet, subnet_config in network_config['subnet'].items():
             if 'address_range' in subnet_config:
                 if 'start' in subnet_config['address_range']:
                     range6_start = []
                     range6_stop = []
                     for start, start_config in subnet_config['address_range']['start'].items():
                         if 'stop' not in start_config:
                             raise ConfigError(f'address-range stop address for start "{start}" is not defined!')
                         stop = start_config['stop']
 
                         # Start address must be inside network
                         if not ip_address(start) in ip_network(subnet):
                             raise ConfigError(f'address-range start address "{start}" is not in subnet "{subnet}"!')
 
                         # Stop address must be inside network
                         if not ip_address(stop) in ip_network(subnet):
                              raise ConfigError(f'address-range stop address "{stop}" is not in subnet "{subnet}"!')
 
                         # Stop address must be greater or equal to start address
                         if not ip_address(stop) >= ip_address(start):
                             raise ConfigError(f'address-range stop address "{stop}" must be greater then or equal ' \
                                               f'to the range start address "{start}"!')
 
                         # DHCPv6 range start address must be unique - two ranges can't
                         # start with the same address - makes no sense
                         if start in range6_start:
                             raise ConfigError(f'Conflicting DHCPv6 lease range: '\
                                               f'Pool start address "{start}" defined multipe times!')
                         range6_start.append(start)
 
                         # DHCPv6 range stop address must be unique - two ranges can't
                         # end with the same address - makes no sense
                         if stop in range6_stop:
                             raise ConfigError(f'Conflicting DHCPv6 lease range: '\
                                               f'Pool stop address "{stop}" defined multipe times!')
                         range6_stop.append(stop)
 
                 if 'prefix' in subnet_config:
                     for prefix in subnet_config['prefix']:
                         if ip_network(prefix) not in ip_network(subnet):
                             raise ConfigError(f'address-range prefix "{prefix}" is not in subnet "{subnet}""')
 
             # Prefix delegation sanity checks
             if 'prefix_delegation' in subnet_config:
                 if 'prefix' not in subnet_config['prefix_delegation']:
                     raise ConfigError('prefix-delegation prefix not defined!')
 
                 for prefix, prefix_config in subnet_config['prefix_delegation']['prefix'].items():
                     if 'delegated_length' not in prefix_config:
                         raise ConfigError(f'Delegated IPv6 prefix length for "{prefix}" '\
                                           f'must be configured')
 
                     if 'prefix_length' not in prefix_config:
                         raise ConfigError('Length of delegated IPv6 prefix must be configured')
 
                     if prefix_config['prefix_length'] > prefix_config['delegated_length']:
                         raise ConfigError('Length of delegated IPv6 prefix must be within parent prefix')
 
             # Static mappings don't require anything (but check if IP is in subnet if it's set)
             if 'static_mapping' in subnet_config:
                 for mapping, mapping_config in subnet_config['static_mapping'].items():
                     if 'ipv6_address' in mapping_config:
                         # Static address must be in subnet
                         if ip_address(mapping_config['ipv6_address']) not in ip_network(subnet):
                             raise ConfigError(f'static-mapping address for mapping "{mapping}" is not in subnet "{subnet}"!')
 
+                        if ('mac' not in mapping_config and 'duid' not in mapping_config) or \
+                            ('mac' in mapping_config and 'duid' in mapping_config):
+                            raise ConfigError(f'Either MAC address or Client identifier (DUID) is required for '
+                                              f'static mapping "{mapping}" within shared-network "{network}, {subnet}"!')
+
             if 'vendor_option' in subnet_config:
                 if len(dict_search('vendor_option.cisco.tftp_server', subnet_config)) > 2:
                     raise ConfigError(f'No more then two Cisco tftp-servers should be defined for subnet "{subnet}"!')
 
             # Subnets must be unique
             if subnet in subnets:
                 raise ConfigError(f'DHCPv6 subnets must be unique! Subnet {subnet} defined multiple times!')
             subnets.append(subnet)
 
         # DHCPv6 requires at least one configured address range or one static mapping
         # (FIXME: is not actually checked right now?)
 
         # There must be one subnet connected to a listen interface if network is not disabled.
         if 'disable' not in network_config:
             if is_subnet_connected(subnet):
                 listen_ok = True
 
             # DHCPv6 subnet must not overlap. ISC DHCP also complains about overlapping
             # subnets: "Warning: subnet 2001:db8::/32 overlaps subnet 2001:db8:1::/32"
             net = ip_network(subnet)
             for n in subnets:
                 net2 = ip_network(n)
                 if (net != net2):
                     if net.overlaps(net2):
                         raise ConfigError('DHCPv6 conflicting subnet ranges: {0} overlaps {1}'.format(net, net2))
 
     if not listen_ok:
         raise ConfigError('None of the DHCPv6 subnets are connected to a subnet6 on '\
                           'this machine. At least one subnet6 must be connected such that '\
                           'DHCPv6 listens on an interface!')
 
 
     return None
 
 def generate(dhcpv6):
     # bail out early - looks like removal from running config
     if not dhcpv6 or 'disable' in dhcpv6:
         return None
 
     dhcpv6['lease_file'] = lease_file
     dhcpv6['machine'] = os.uname().machine
 
     if not os.path.exists(lease_file):
         write_file(lease_file, '', user='_kea', group='vyattacfg', mode=0o755)
 
     render(config_file, 'dhcp-server/kea-dhcp6.conf.j2', dhcpv6)
     return None
 
 def apply(dhcpv6):
     # bail out early - looks like removal from running config
     service_name = 'kea-dhcp6-server.service'
     if not dhcpv6 or 'disable' in dhcpv6:
         # DHCP server is removed in the commit
         call(f'systemctl stop {service_name}')
         if os.path.exists(config_file):
             os.unlink(config_file)
         return None
 
     call(f'systemctl restart {service_name}')
 
     return None
 
 if __name__ == '__main__':
     try:
         c = get_config()
         verify(c)
         generate(c)
         apply(c)
     except ConfigError as e:
         print(e)
         exit(1)
diff --git a/src/migration-scripts/dhcp-server/7-to-8 b/src/migration-scripts/dhcp-server/7-to-8
new file mode 100755
index 000000000..151aa6d7b
--- /dev/null
+++ b/src/migration-scripts/dhcp-server/7-to-8
@@ -0,0 +1,65 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2023 VyOS maintainers and contributors
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 or later as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# T3316:
+# - Adjust hostname to have valid FQDN characters only (underscores aren't allowed anymore)
+# - Rename "service dhcp-server shared-network-name ... static-mapping <hostname> mac-address ..."
+#       to "service dhcp-server shared-network-name ... static-mapping <hostname> mac ..."
+
+import sys
+import re
+from vyos.configtree import ConfigTree
+
+if len(sys.argv) < 2:
+    print("Must specify file name!")
+    sys.exit(1)
+
+file_name = sys.argv[1]
+
+with open(file_name, 'r') as f:
+    config_file = f.read()
+
+base = ['service', 'dhcp-server', 'shared-network-name']
+config = ConfigTree(config_file)
+
+if not config.exists(base):
+    # Nothing to do
+    sys.exit(0)
+
+for network in config.list_nodes(base):
+    # Run this for every specified 'subnet'
+    if config.exists(base + [network, 'subnet']):
+        for subnet in config.list_nodes(base + [network, 'subnet']):
+            base_subnet = base + [network, 'subnet', subnet]
+            if config.exists(base_subnet + ['static-mapping']):
+                for hostname in config.list_nodes(base_subnet + ['static-mapping']):
+                    base_mapping = base_subnet + ['static-mapping', hostname]
+
+                    # Rename the 'mac-address' node to 'mac'
+                    if config.exists(base_mapping + ['mac-address']):
+                        config.rename(base_mapping + ['mac-address'], 'mac')
+
+                    # Adjust hostname to have valid FQDN characters only
+                    new_hostname = re.sub(r'[^a-zA-Z0-9-.]', '-', hostname)
+                    if new_hostname != hostname:
+                        config.rename(base_mapping, new_hostname)
+
+try:
+    with open(file_name, 'w') as f:
+        f.write(config.to_string())
+except OSError as e:
+    print("Failed to save the modified config: {}".format(e))
+    exit(1)
diff --git a/src/migration-scripts/dhcpv6-server/2-to-3 b/src/migration-scripts/dhcpv6-server/2-to-3
new file mode 100755
index 000000000..f4bdc1d1e
--- /dev/null
+++ b/src/migration-scripts/dhcpv6-server/2-to-3
@@ -0,0 +1,78 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2023 VyOS maintainers and contributors
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 or later as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# T3316:
+# - Adjust hostname to have valid FQDN characters only (underscores aren't allowed anymore)
+# - Adjust duid (old identifier) to comply with duid format
+# - Rename "service dhcpv6-server shared-network-name ... static-mapping <hostname> identifier ..."
+#       to "service dhcpv6-server shared-network-name ... static-mapping <hostname> duid ..."
+# - Rename "service dhcpv6-server shared-network-name ... static-mapping <hostname> mac-address ..."
+#       to "service dhcpv6-server shared-network-name ... static-mapping <hostname> mac ..."
+
+import sys
+import re
+from vyos.configtree import ConfigTree
+
+if len(sys.argv) < 2:
+    print("Must specify file name!")
+    sys.exit(1)
+
+file_name = sys.argv[1]
+
+with open(file_name, 'r') as f:
+    config_file = f.read()
+
+base = ['service', 'dhcpv6-server', 'shared-network-name']
+config = ConfigTree(config_file)
+
+if not config.exists(base):
+    # Nothing to do
+    sys.exit(0)
+
+for network in config.list_nodes(base):
+    # Run this for every specified 'subnet'
+    if config.exists(base + [network, 'subnet']):
+        for subnet in config.list_nodes(base + [network, 'subnet']):
+            base_subnet = base + [network, 'subnet', subnet]
+            if config.exists(base_subnet + ['static-mapping']):
+                for hostname in config.list_nodes(base_subnet + ['static-mapping']):
+                    base_mapping = base_subnet + ['static-mapping', hostname]
+                    if config.exists(base_mapping + ['identifier']):
+
+                        # Adjust duid to comply with duid format (a:3:b:04:... => 0a:03:0b:04:...)
+                        duid = config.return_value(base_mapping + ['identifier'])
+                        new_duid = ':'.join(x.rjust(2,'0') for x in duid.split(':'))
+                        if new_duid != duid:
+                            config.set(base_mapping + ['identifier'], new_duid)
+
+                        # Rename the 'identifier' node to 'duid'
+                        config.rename(base_mapping + ['identifier'], 'duid')
+
+                    # Rename the 'mac-address' node to 'mac'
+                    if config.exists(base_mapping + ['mac-address']):
+                        config.rename(base_mapping + ['mac-address'], 'mac')
+
+                    # Adjust hostname to have valid FQDN characters only
+                    new_hostname = re.sub(r'[^a-zA-Z0-9-.]', '-', hostname)
+                    if new_hostname != hostname:
+                        config.rename(base_mapping, new_hostname)
+
+try:
+    with open(file_name, 'w') as f:
+        f.write(config.to_string())
+except OSError as e:
+    print("Failed to save the modified config: {}".format(e))
+    exit(1)