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diff --git a/interface-definitions/dns-domain-name.xml.in b/interface-definitions/dns-domain-name.xml.in
index 005a55ab3..a599a75cc 100644
--- a/interface-definitions/dns-domain-name.xml.in
+++ b/interface-definitions/dns-domain-name.xml.in
@@ -1,114 +1,114 @@
<?xml version="1.0"?>
<interfaceDefinition>
<node name="system">
<children>
<leafNode name="name-server" owner="${vyos_conf_scripts_dir}/host_name.py">
<properties>
<help>System Domain Name Servers (DNS)</help>
<priority>400</priority>
<completionHelp>
<script>${vyos_completion_dir}/list_interfaces.py</script>
</completionHelp>
<valueHelp>
<format>ipv4</format>
<description>Domain Name Server IPv4 address</description>
</valueHelp>
<valueHelp>
<format>ipv6</format>
<description>Domain Name Server IPv6 address</description>
</valueHelp>
<valueHelp>
<format>txt</format>
<description>Use Domain Name Server from DHCP interface</description>
</valueHelp>
<multi/>
<constraint>
<validator name="ipv4-address"/>
<validator name="ipv6-address"/>
- <validator name="interface-name"/>
+ #include <include/constraint/interface-name.xml.in>
</constraint>
</properties>
</leafNode>
<leafNode name="host-name" owner="${vyos_conf_scripts_dir}/host_name.py">
<properties>
<help>System host name (default: vyos)</help>
<constraint>
<regex>[A-Za-z0-9][-.A-Za-z0-9]*[A-Za-z0-9]</regex>
</constraint>
</properties>
</leafNode>
<leafNode name="domain-name" owner="${vyos_conf_scripts_dir}/host_name.py">
<properties>
<help>System domain name</help>
<constraint>
<validator name="fqdn"/>
</constraint>
</properties>
</leafNode>
<node name="domain-search" owner="${vyos_conf_scripts_dir}/host_name.py">
<properties>
<help>Domain Name Server (DNS) domain completion order</help>
<priority>400</priority>
</properties>
<children>
<leafNode name="domain">
<properties>
<help>DNS domain completion order</help>
<constraint>
<regex>[-a-zA-Z0-9.]+$</regex>
</constraint>
<constraintErrorMessage>Invalid domain name</constraintErrorMessage>
<multi/>
</properties>
</leafNode>
</children>
</node>
<node name="static-host-mapping" owner="${vyos_conf_scripts_dir}/host_name.py">
<properties>
<help>Map host names to addresses</help>
<priority>400</priority>
</properties>
<children>
<tagNode name="host-name">
<properties>
<help>Host name for static address mapping</help>
<constraint>
<regex>[A-Za-z0-9][-.A-Za-z0-9]*[A-Za-z0-9]$</regex>
</constraint>
<constraintErrorMessage>invalid hostname</constraintErrorMessage>
</properties>
<children>
<leafNode name="alias">
<properties>
<help>Alias for this address</help>
<constraint>
<regex>.{1,63}$</regex>
</constraint>
<constraintErrorMessage>invalid alias hostname, needs to be between 1 and 63 charactes</constraintErrorMessage>
<multi />
</properties>
</leafNode>
<leafNode name="inet">
<properties>
<help>IP Address [REQUIRED]</help>
<valueHelp>
<format>ipv4</format>
<description>IPv4 address</description>
</valueHelp>
<valueHelp>
<format>ipv6</format>
<description>IPv6 address</description>
</valueHelp>
<constraint>
<validator name="ip-address"/>
</constraint>
<multi/>
</properties>
</leafNode>
</children>
</tagNode>
</children>
</node>
</children>
</node>
</interfaceDefinition>
diff --git a/interface-definitions/include/constraint/interface-name.xml.in b/interface-definitions/include/constraint/interface-name.xml.in
new file mode 100644
index 000000000..2d1f7b757
--- /dev/null
+++ b/interface-definitions/include/constraint/interface-name.xml.in
@@ -0,0 +1,4 @@
+<!-- include start from constraint/interface-name.xml.in -->
+<regex>(bond|br|dum|en|ersp|eth|gnv|lan|l2tp|l2tpeth|macsec|peth|ppp|pppoe|pptp|sstp|tun|veth|vti|vtun|vxlan|wg|wlan|wwan)[0-9]+(.\d+)?|lo</regex>
+<validator name="file-path --lookup-path /sys/class/net --directory"/>
+<!-- include end -->
diff --git a/interface-definitions/include/generic-interface-broadcast.xml.i b/interface-definitions/include/generic-interface-broadcast.xml.i
index 6f76dde1a..af35a888b 100644
--- a/interface-definitions/include/generic-interface-broadcast.xml.i
+++ b/interface-definitions/include/generic-interface-broadcast.xml.i
@@ -1,17 +1,17 @@
<!-- include start from generic-interface-broadcast.xml.i -->
<leafNode name="interface">
<properties>
<help>Interface Name to use</help>
<completionHelp>
<script>${vyos_completion_dir}/list_interfaces.py --broadcast</script>
</completionHelp>
<valueHelp>
<format>txt</format>
<description>Interface name</description>
</valueHelp>
<constraint>
- <validator name="interface-name"/>
+ #include <include/constraint/interface-name.xml.in>
</constraint>
</properties>
</leafNode>
<!-- include end -->
diff --git a/interface-definitions/include/generic-interface-multi.xml.i b/interface-definitions/include/generic-interface-multi.xml.i
index 65aae28ae..16916ff54 100644
--- a/interface-definitions/include/generic-interface-multi.xml.i
+++ b/interface-definitions/include/generic-interface-multi.xml.i
@@ -1,18 +1,18 @@
<!-- include start from generic-interface-multi.xml.i -->
<leafNode name="interface">
<properties>
<help>Interface to use</help>
<completionHelp>
<script>${vyos_completion_dir}/list_interfaces.py</script>
</completionHelp>
<valueHelp>
<format>txt</format>
<description>Interface name</description>
</valueHelp>
<constraint>
- <validator name="interface-name"/>
+ #include <include/constraint/interface-name.xml.in>
</constraint>
<multi/>
</properties>
</leafNode>
<!-- include end -->
diff --git a/interface-definitions/include/source-interface.xml.i b/interface-definitions/include/source-interface.xml.i
index a9c2a0f9d..4c1fddb57 100644
--- a/interface-definitions/include/source-interface.xml.i
+++ b/interface-definitions/include/source-interface.xml.i
@@ -1,17 +1,17 @@
<!-- include start from source-interface.xml.i -->
<leafNode name="source-interface">
<properties>
<help>Interface used to establish connection</help>
<valueHelp>
<format>interface</format>
<description>Interface name</description>
</valueHelp>
<completionHelp>
<script>${vyos_completion_dir}/list_interfaces.py</script>
</completionHelp>
<constraint>
- <validator name="interface-name"/>
+ #include <include/constraint/interface-name.xml.in>
</constraint>
</properties>
</leafNode>
<!-- include end -->
diff --git a/interface-definitions/interfaces-bonding.xml.in b/interface-definitions/interfaces-bonding.xml.in
index 307dd7558..6b5335d2a 100644
--- a/interface-definitions/interfaces-bonding.xml.in
+++ b/interface-definitions/interfaces-bonding.xml.in
@@ -1,231 +1,231 @@
<?xml version="1.0"?>
<interfaceDefinition>
<node name="interfaces">
<children>
<tagNode name="bonding" owner="${vyos_conf_scripts_dir}/interfaces-bonding.py">
<properties>
<help>Bonding Interface/Link Aggregation</help>
<priority>320</priority>
<constraint>
<regex>^bond[0-9]+$</regex>
</constraint>
<constraintErrorMessage>Bonding interface must be named bondN</constraintErrorMessage>
<valueHelp>
<format>bondN</format>
<description>Bonding interface name</description>
</valueHelp>
</properties>
<children>
#include <include/interface/address-ipv4-ipv6-dhcp.xml.i>
<node name="arp-monitor">
<properties>
<help>ARP link monitoring parameters</help>
</properties>
<children>
<leafNode name="interval">
<properties>
<help>ARP link monitoring interval</help>
<valueHelp>
<format>u32</format>
<description>Specifies the ARP link monitoring frequency in milliseconds</description>
</valueHelp>
<constraint>
<validator name="numeric" argument="--range 0-4294967295"/>
</constraint>
</properties>
</leafNode>
<leafNode name="target">
<properties>
<help>IP address used for ARP monitoring</help>
<valueHelp>
<format>ipv4</format>
<description>Specify IPv4 address of ARP requests when interval is enabled</description>
</valueHelp>
<constraint>
<validator name="ipv4-address"/>
</constraint>
<multi/>
</properties>
</leafNode>
</children>
</node>
#include <include/interface/description.xml.i>
#include <include/interface/dhcp-options.xml.i>
#include <include/interface/dhcpv6-options.xml.i>
#include <include/interface/disable-link-detect.xml.i>
#include <include/interface/disable.xml.i>
#include <include/interface/vrf.xml.i>
#include <include/interface/mirror.xml.i>
<leafNode name="hash-policy">
<properties>
<help>Bonding transmit hash policy</help>
<completionHelp>
<list>layer2 layer2+3 layer3+4 encap2+3 encap3+4</list>
</completionHelp>
<valueHelp>
<format>layer2</format>
<description>use MAC addresses to generate the hash (802.3ad, default)</description>
</valueHelp>
<valueHelp>
<format>layer2+3</format>
<description>combine MAC address and IP address to make hash</description>
</valueHelp>
<valueHelp>
<format>layer3+4</format>
<description>combine IP address and port to make hash</description>
</valueHelp>
<valueHelp>
<format>encap2+3</format>
<description>combine encapsulated MAC address and IP address to make hash</description>
</valueHelp>
<valueHelp>
<format>encap3+4</format>
<description>combine encapsulated IP address and port to make hash</description>
</valueHelp>
<constraint>
<regex>^(layer2\+3|layer3\+4|layer2|encap2\+3|encap3\+4)$</regex>
</constraint>
<constraintErrorMessage>hash-policy must be layer2 layer2+3 layer3+4 encap2+3 or encap3+4</constraintErrorMessage>
</properties>
<defaultValue>layer2</defaultValue>
</leafNode>
#include <include/interface/ipv4-options.xml.i>
#include <include/interface/ipv6-options.xml.i>
#include <include/interface/mac.xml.i>
<leafNode name="mii-mon-interval">
<properties>
<help>Specifies the MII link monitoring frequency in milliseconds</help>
<valueHelp>
<format>u32:0</format>
<description>Disable MII link monitoring</description>
</valueHelp>
<valueHelp>
<format>u32:50-1000</format>
<description>MII link monitoring frequency in milliseconds</description>
</valueHelp>
<constraint>
<validator name="numeric" argument="--range 0-0 --range 50-1000"/>
</constraint>
</properties>
<defaultValue>100</defaultValue>
</leafNode>
<leafNode name="min-links">
<properties>
<help>Minimum number of member interfaces required up before enabling bond</help>
<valueHelp>
<format>u32:0-16</format>
<description>Minimum number of member interfaces required up before enabling bond</description>
</valueHelp>
<constraint>
<validator name="numeric" argument="--range 0-16"/>
</constraint>
</properties>
<defaultValue>0</defaultValue>
</leafNode>
<leafNode name="lacp-rate">
<properties>
<help>Rate in which we will ask our link partner to transmit LACPDU packets</help>
<completionHelp>
<list>slow fast</list>
</completionHelp>
<valueHelp>
<format>slow</format>
<description>Request partner to transmit LACPDUs every 30 seconds (default)</description>
</valueHelp>
<valueHelp>
<format>fast</format>
<description>Request partner to transmit LACPDUs every 1 second</description>
</valueHelp>
<constraint>
<regex>^(slow|fast)$</regex>
</constraint>
</properties>
<defaultValue>slow</defaultValue>
</leafNode>
<leafNode name="mode">
<properties>
<help>Bonding mode</help>
<completionHelp>
<list>802.3ad active-backup broadcast round-robin transmit-load-balance adaptive-load-balance xor-hash</list>
</completionHelp>
<valueHelp>
<format>802.3ad</format>
<description>IEEE 802.3ad Dynamic link aggregation (Default)</description>
</valueHelp>
<valueHelp>
<format>active-backup</format>
<description>Fault tolerant: only one slave in the bond is active</description>
</valueHelp>
<valueHelp>
<format>broadcast</format>
<description>Fault tolerant: transmits everything on all slave interfaces</description>
</valueHelp>
<valueHelp>
<format>round-robin</format>
<description>Load balance: transmit packets in sequential order</description>
</valueHelp>
<valueHelp>
<format>transmit-load-balance</format>
<description>Load balance: adapts based on transmit load and speed</description>
</valueHelp>
<valueHelp>
<format>adaptive-load-balance</format>
<description>Load balance: adapts based on transmit and receive plus ARP</description>
</valueHelp>
<valueHelp>
<format>xor-hash</format>
<description>Distribute based on MAC address</description>
</valueHelp>
<constraint>
<regex>^(802.3ad|active-backup|broadcast|round-robin|transmit-load-balance|adaptive-load-balance|xor-hash)$</regex>
</constraint>
<constraintErrorMessage>mode must be 802.3ad, active-backup, broadcast, round-robin, transmit-load-balance, adaptive-load-balance, or xor</constraintErrorMessage>
</properties>
<defaultValue>802.3ad</defaultValue>
</leafNode>
<node name="member">
<properties>
<help>Bridge member interfaces</help>
</properties>
<children>
<leafNode name="interface">
<properties>
<help>Member interface name</help>
<completionHelp>
<script>${vyos_completion_dir}/list_interfaces.py --bondable</script>
</completionHelp>
<valueHelp>
<format>txt</format>
<description>Interface name</description>
</valueHelp>
<constraint>
- <validator name="interface-name"/>
+ #include <include/constraint/interface-name.xml.in>
</constraint>
<multi/>
</properties>
</leafNode>
</children>
</node>
#include <include/interface/mtu-68-16000.xml.i>
<leafNode name="primary">
<properties>
<help>Primary device interface</help>
<completionHelp>
<script>${vyos_completion_dir}/list_interfaces.py --bondable</script>
</completionHelp>
<valueHelp>
<format>txt</format>
<description>Interface name</description>
</valueHelp>
<constraint>
- <validator name="interface-name"/>
+ #include <include/constraint/interface-name.xml.in>
</constraint>
</properties>
</leafNode>
#include <include/interface/vif-s.xml.i>
#include <include/interface/vif.xml.i>
</children>
</tagNode>
</children>
</node>
</interfaceDefinition>
diff --git a/interface-definitions/vrrp.xml.in b/interface-definitions/vrrp.xml.in
index 337a0bbc9..fed1486f9 100644
--- a/interface-definitions/vrrp.xml.in
+++ b/interface-definitions/vrrp.xml.in
@@ -1,382 +1,382 @@
<?xml version="1.0"?>
<interfaceDefinition>
<node name="high-availability">
<properties>
<help>High availability settings</help>
</properties>
<children>
<node name="vrrp" owner="${vyos_conf_scripts_dir}/vrrp.py">
<properties>
<priority>800</priority> <!-- after all interfaces and conntrack-sync -->
<help>Virtual Router Redundancy Protocol settings</help>
</properties>
<children>
<tagNode name="group">
<properties>
<help>VRRP group</help>
</properties>
<children>
<leafNode name="interface">
<properties>
<help>Network interface</help>
<completionHelp>
<script>${vyos_completion_dir}/list_interfaces.py --broadcast</script>
</completionHelp>
</properties>
</leafNode>
<leafNode name="advertise-interval">
<properties>
<help>Advertise interval</help>
<valueHelp>
<format>u32:1-255</format>
<description>Advertise interval in seconds (default: 1)</description>
</valueHelp>
<constraint>
<validator name="numeric" argument="--range 1-255"/>
</constraint>
</properties>
<defaultValue>1</defaultValue>
</leafNode>
<node name="authentication">
<properties>
<help>VRRP authentication</help>
</properties>
<children>
<leafNode name="password">
<properties>
<help>VRRP password</help>
<valueHelp>
<format>txt</format>
<description>Password string (up to 8 characters)</description>
</valueHelp>
<constraint>
<regex>.{1,8}</regex>
</constraint>
<constraintErrorMessage>Password must not be longer than 8 characters</constraintErrorMessage>
</properties>
</leafNode>
<leafNode name="type">
<properties>
<help>Authentication type</help>
<completionHelp>
<list>plaintext-password ah</list>
</completionHelp>
<valueHelp>
<format>plaintext-password</format>
<description>Simple password string</description>
</valueHelp>
<valueHelp>
<format>ah</format>
<description>AH - IPSEC (not recommended)</description>
</valueHelp>
<constraint>
<regex>^(plaintext-password|ah)$</regex>
</constraint>
<constraintErrorMessage>Authentication type must be plaintext-password or ah</constraintErrorMessage>
</properties>
</leafNode>
</children>
</node>
<leafNode name="description">
<properties>
<help>Group description</help>
</properties>
</leafNode>
#include <include/generic-disable-node.xml.i>
<node name="health-check">
<properties>
<help>Health check script</help>
</properties>
<children>
<leafNode name="failure-count">
<properties>
<help>Health check failure count required for transition to fault (default: 3)</help>
<constraint>
<validator name="numeric" argument="--positive" />
</constraint>
</properties>
<defaultValue>3</defaultValue>
</leafNode>
<leafNode name="interval">
<properties>
<help>Health check execution interval in seconds (default: 60)</help>
<constraint>
<validator name="numeric" argument="--positive"/>
</constraint>
</properties>
<defaultValue>60</defaultValue>
</leafNode>
<leafNode name="script">
<properties>
<help>Health check script file</help>
<constraint>
<validator name="script"/>
</constraint>
</properties>
</leafNode>
</children>
</node>
<leafNode name="hello-source-address">
<properties>
<help>VRRP hello source address</help>
<valueHelp>
<format>ipv4</format>
<description>IPv4 hello source address</description>
</valueHelp>
<valueHelp>
<format>ipv6</format>
<description>IPv6 hello source address</description>
</valueHelp>
<constraint>
<validator name="ipv4-address"/>
<validator name="ipv6-address"/>
</constraint>
</properties>
</leafNode>
<leafNode name="peer-address">
<properties>
<help>Unicast VRRP peer address</help>
<valueHelp>
<format>ipv4</format>
<description>IPv4 unicast peer address</description>
</valueHelp>
<valueHelp>
<format>ipv6</format>
<description>IPv6 unicast peer address</description>
</valueHelp>
<constraint>
<validator name="ipv4-address"/>
<validator name="ipv6-address"/>
</constraint>
</properties>
</leafNode>
<leafNode name="no-preempt">
<properties>
<valueless/>
<help>Disable master preemption</help>
</properties>
</leafNode>
<leafNode name="preempt-delay">
<properties>
<help>Preempt delay (in seconds)</help>
<valueHelp>
<format>u32:0-1000</format>
<description>preempt delay</description>
</valueHelp>
<constraint>
<validator name="numeric" argument="--range 0-1000"/>
</constraint>
</properties>
<defaultValue>0</defaultValue>
</leafNode>
<leafNode name="priority">
<properties>
<help>Router priority (default: 100)</help>
<valueHelp>
<format>u32:1-255</format>
<description>Router priority</description>
</valueHelp>
<constraint>
<validator name="numeric" argument="--range 1-255"/>
</constraint>
</properties>
<defaultValue>100</defaultValue>
</leafNode>
<leafNode name="rfc3768-compatibility">
<properties>
<valueless/>
<help>Use VRRP virtual MAC address as per RFC3768</help>
</properties>
</leafNode>
<node name="track">
<properties>
<help>Track settings</help>
</properties>
<children>
<leafNode name="exclude-vrrp-interface">
<properties>
<valueless/>
<help>Disable track state of main interface</help>
</properties>
</leafNode>
<leafNode name="interface">
<properties>
<help>Interface name state check</help>
<completionHelp>
<script>${vyos_completion_dir}/list_interfaces.py --broadcast</script>
</completionHelp>
<valueHelp>
<format>txt</format>
<description>Interface name</description>
</valueHelp>
<constraint>
- <validator name="interface-name"/>
+ #include <include/constraint/interface-name.xml.in>
</constraint>
<multi/>
</properties>
</leafNode>
</children>
</node>
<node name="transition-script">
<properties>
<help>VRRP transition scripts</help>
</properties>
<children>
<leafNode name="master">
<properties>
<help>Script to run on VRRP state transition to master</help>
<constraint>
<validator name="script"/>
</constraint>
</properties>
</leafNode>
<leafNode name="backup">
<properties>
<help>Script to run on VRRP state transition to backup</help>
<constraint>
<validator name="script"/>
</constraint>
</properties>
</leafNode>
<leafNode name="fault">
<properties>
<help>Script to run on VRRP state transition to fault</help>
<constraint>
<validator name="script"/>
</constraint>
</properties>
</leafNode>
<leafNode name="stop">
<properties>
<help>Script to run on VRRP state transition to stop</help>
<constraint>
<validator name="script"/>
</constraint>
</properties>
</leafNode>
<leafNode name="mode-force">
<properties>
<valueless/>
<help>Disable VRRP state checking (deprecated, will be removed in VyOS 1.4)</help>
</properties>
</leafNode>
</children>
</node>
<tagNode name="virtual-address">
<properties>
<help>Virtual address (IPv4 or IPv6, but they must not be mixed in one group)</help>
<valueHelp>
<format>ipv4</format>
<description>IPv4 virtual address</description>
</valueHelp>
<valueHelp>
<format>ipv6</format>
<description>IPv6 virtual address</description>
</valueHelp>
<constraint>
<validator name="ipv4-host"/>
<validator name="ipv6-host"/>
</constraint>
<constraintErrorMessage>Virtual address must be a valid IPv4 or IPv6 address with prefix length (e.g. 192.0.2.3/24 or 2001:db8:ff::10/64)</constraintErrorMessage>
</properties>
<children>
#include <include/generic-interface-broadcast.xml.i>
</children>
</tagNode>
<leafNode name="virtual-address-excluded">
<properties>
<help>Virtual address (If you need additional IPv4 and IPv6 in same group)</help>
<valueHelp>
<format>ipv4</format>
<description>IP address</description>
</valueHelp>
<valueHelp>
<format>ipv6</format>
<description>IPv6 address</description>
</valueHelp>
<multi/>
<constraint>
<validator name="ipv4-host"/>
<validator name="ipv6-host"/>
</constraint>
<constraintErrorMessage>Virtual address must be a valid IPv4 or IPv6 address with prefix length (e.g. 192.0.2.3/24 or 2001:db8:ff::10/64)</constraintErrorMessage>
</properties>
</leafNode>
<leafNode name="vrid">
<properties>
<help>Virtual router identifier</help>
<valueHelp>
<format>u32:1-255</format>
<description>Virtual router identifier</description>
</valueHelp>
<constraint>
<validator name="numeric" argument="--range 1-255"/>
</constraint>
</properties>
</leafNode>
</children>
</tagNode>
<tagNode name="sync-group">
<properties>
<help>VRRP sync group</help>
</properties>
<children>
<leafNode name="member">
<properties>
<multi/>
<help>Sync group member</help>
<valueHelp>
<format>txt</format>
<description>VRRP group name</description>
</valueHelp>
<completionHelp>
<path>high-availability vrrp group</path>
</completionHelp>
</properties>
</leafNode>
<node name="transition-script">
<properties>
<help>VRRP transition scripts</help>
</properties>
<children>
<leafNode name="master">
<properties>
<help>Script to run on VRRP state transition to master</help>
<constraint>
<validator name="script"/>
</constraint>
</properties>
</leafNode>
<leafNode name="backup">
<properties>
<help>Script to run on VRRP state transition to backup</help>
<constraint>
<validator name="script"/>
</constraint>
</properties>
</leafNode>
<leafNode name="fault">
<properties>
<help>Script to run on VRRP state transition to fault</help>
<constraint>
<validator name="script"/>
</constraint>
</properties>
</leafNode>
<leafNode name="stop">
<properties>
<help>Script to run on VRRP state transition to stop</help>
<constraint>
<validator name="script"/>
</constraint>
</properties>
</leafNode>
</children>
</node>
</children>
</tagNode>
</children>
</node>
</children>
</node>
</interfaceDefinition>
diff --git a/src/validators/interface-name b/src/validators/interface-name
deleted file mode 100755
index 105815eee..000000000
--- a/src/validators/interface-name
+++ /dev/null
@@ -1,34 +0,0 @@
-#!/usr/bin/env python3
-#
-# Copyright (C) 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 re
-
-from sys import argv
-from sys import exit
-
-pattern = '^(bond|br|dum|en|ersp|eth|gnv|lan|l2tp|l2tpeth|macsec|peth|ppp|pppoe|pptp|sstp|tun|vti|vtun|vxlan|wg|wlan|wwan)[0-9]+(.\d+)?|lo$'
-
-if __name__ == '__main__':
- if len(argv) != 2:
- exit(1)
- interface = argv[1]
-
- if re.match(pattern, interface):
- exit(0)
- if os.path.exists(f'/sys/class/net/{interface}'):
- exit(0)
- exit(1)

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