diff --git a/interface-definitions/dhcp-server.xml.in b/interface-definitions/dhcp-server.xml.in
index 912e4eaf7..aba2bea8a 100644
--- a/interface-definitions/dhcp-server.xml.in
+++ b/interface-definitions/dhcp-server.xml.in
@@ -1,454 +1,457 @@
<?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>
<leafNode name="global-parameters">
<properties>
<help>Additional global parameters for DHCP server. You must
use the syntax of dhcpd.conf in this text-field. Using this
without proper knowledge may result in a crashed DHCP server.
Check system log to look for errors.</help>
<multi/>
</properties>
</leafNode>
<leafNode name="hostfile-update">
<properties>
<help>Updating /etc/hosts file (per client lease)</help>
<valueless/>
</properties>
</leafNode>
<leafNode name="host-decl-name">
<properties>
<help>Use host declaration name for forward DNS name</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>
<leafNode name="description">
<properties>
<help>Shared-network-name description</help>
</properties>
</leafNode>
#include <include/generic-disable-node.xml.i>
<leafNode name="shared-network-parameters">
<properties>
<help>Additional shared-network parameters for DHCP server.
You must use the syntax of dhcpd.conf in this text-field.
Using this without proper knowledge may result in a crashed
DHCP server. Check system log to look for errors.</help>
<multi/>
</properties>
</leafNode>
<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>
</properties>
</leafNode>
<leafNode name="bootfile-server">
<properties>
<help>Server (IP address or domain name) from which the initial
boot file is to be loaded</help>
</properties>
</leafNode>
<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>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>
<leafNode name="dns-server">
<properties>
<help>DNS server IPv4 address</help>
<valueHelp>
<format>ipv4</format>
<description>DNS server IPv4 address</description>
</valueHelp>
<constraint>
<validator name="ipv4-address"/>
</constraint>
<multi/>
</properties>
</leafNode>
<leafNode name="domain-name">
<properties>
<help>Client Domain Name</help>
<constraint>
<validator name="fqdn"/>
</constraint>
<constraintErrorMessage>Invalid domain name (RFC 1123 section 2).\nMay only contain letters, numbers and .-_</constraintErrorMessage>
</properties>
</leafNode>
#include <include/dhcp-server-domain-search.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>
<node name="failover">
<properties>
<help>DHCP failover parameters</help>
</properties>
<children>
<leafNode name="local-address">
<properties>
<help>IP address for failover peer to connect [REQUIRED]</help>
<valueHelp>
<format>ipv4</format>
<description>IPv4 address to exclude from lease range</description>
</valueHelp>
<constraint>
<validator name="ipv4-address"/>
</constraint>
</properties>
</leafNode>
<leafNode name="name">
<properties>
<help>DHCP failover peer name [REQUIRED]</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="peer-address">
<properties>
<help>IP address of failover peer [REQUIRED]</help>
<valueHelp>
<format>ipv4</format>
<description>IPv4 address of failover peer</description>
</valueHelp>
<constraint>
<validator name="ipv4-address"/>
</constraint>
</properties>
</leafNode>
<leafNode name="status">
<properties>
<help>DHCP failover peer status (primary|secondary) [REQUIRED]</help>
<completionHelp>
<list>primary secondary</list>
</completionHelp>
<constraint>
<regex>(primary|secondary)</regex>
</constraint>
<constraintErrorMessage>Invalid DHCP failover peer status</constraintErrorMessage>
</properties>
</leafNode>
</children>
</node>
<leafNode name="ip-forwarding">
<properties>
<help>Enable IP forwarding on client</help>
<valueless/>
</properties>
</leafNode>
<leafNode name="lease">
<properties>
<help>Lease timeout in seconds (default: 86400)</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>
<leafNode name="ntp-server">
<properties>
<help>IP address of NTP server</help>
<valueHelp>
<format>ipv4</format>
<description>NTP server IPv4 address</description>
</valueHelp>
<constraint>
<validator name="ipv4-address"/>
</constraint>
<multi/>
</properties>
</leafNode>
<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 DHCP lease range name. May only contain letters, numbers and .-_</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>
<constraint>
<regex>[-_a-zA-Z0-9.]+</regex>
</constraint>
<constraintErrorMessage>Invalid static mapping name. May only contain letters, numbers and .-_</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>MAC address of static mapping [REQUIRED]</help>
+ <help>Media Access Control (MAC) address</help>
<valueHelp>
<format>h:h:h:h:h:h</format>
- <description>MAC address used in static mapping [REQUIRED]</description>
+ <description>Hardware (MAC) address</description>
</valueHelp>
+ <constraint>
+ <validator name="mac-address"/>
+ </constraint>
</properties>
</leafNode>
<leafNode name="static-mapping-parameters">
<properties>
<help>Additional static-mapping parameters for DHCP server.
Will be placed inside the "host" block of the mapping.
You must use the syntax of dhcpd.conf in this text-field.
Using this without proper knowledge may result in a crashed
DHCP server. Check system log to look for errors.</help>
<multi/>
</properties>
</leafNode>
</children>
</tagNode>
<node name="static-route">
<properties>
<help>Classless static route</help>
</properties>
<children>
<leafNode name="destination-subnet">
<properties>
<help>Destination subnet [REQUIRED]</help>
<valueHelp>
<format>ipv4net</format>
<description>IPv4 address and prefix length</description>
</valueHelp>
<constraint>
<validator name="ipv4-prefix"/>
</constraint>
</properties>
</leafNode>
<leafNode name="router">
<properties>
<help>IP address of router to be used to reach the destination subnet [REQUIRED]</help>
<valueHelp>
<format>ipv4</format>
<description>IPv4 address of router</description>
</valueHelp>
<constraint>
<validator name="ip-address"/>
</constraint>
</properties>
</leafNode>
</children>
</node>
<leafNode name="subnet-parameters">
<properties>
<help>Additional subnet parameters for DHCP server. You must
use the syntax of dhcpd.conf in this text-field. Using this
without proper knowledge may result in a crashed DHCP server.
Check system log to look for errors.</help>
<multi/>
</properties>
</leafNode>
<leafNode name="tftp-server-name">
<properties>
<help>TFTP server name</help>
</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="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>