<?xml version="1.0"?> <interfaceDefinition> <node name="interfaces"> <children> <tagNode name="loopback" owner="${vyos_conf_scripts_dir}/interfaces-loopback.py"> <properties> <help>Loopback interface</help> <priority>300</priority> <constraint> <regex>lo$</regex> </constraint> <constraintErrorMessage>Loopback interface must be named lo</constraintErrorMessage> <valueHelp> <format>lo</format> <description>Loopback interface</description> </valueHelp> </properties> <children> #include "include/address-ipv4-ipv6.xml.i" <leafNode name="description"> <properties> <help>Interface description</help> <constraint> <regex>^.{1,256}$</regex> </constraint> <constraintErrorMessage>Interface description too long (limit 256 characters)</constraintErrorMessage> </properties> </leafNode> </children> </tagNode> </children> </node> </interfaceDefinition>