<?xml version="1.0"?> <!-- DHCP relay configuration --> <interfaceDefinition> <node name="service"> <children> <node name="dhcp-relay" owner="${vyos_conf_scripts_dir}/dhcp_relay.py"> <properties> <help>Host Configuration Protocol (DHCP) relay agent</help> <priority>910</priority> </properties> <children> #include <include/generic-interface-multi-broadcast.xml.i> <leafNode name="listen-interface"> <properties> <help>Interface for DHCP Relay Agent to listen for requests</help> <completionHelp> <script>${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> <multi/> </properties> </leafNode> <leafNode name="upstream-interface"> <properties> <help>Interface for DHCP Relay Agent forward requests out</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> <multi/> </properties> </leafNode> <node name="relay-options"> <properties> <help>Relay options</help> </properties> <children> <leafNode name="hop-count"> <properties> <help>Policy to discard packets that have reached specified hop-count</help> <valueHelp> <format>u32:1-255</format> <description>Hop count</description> </valueHelp> <constraint> <validator name="numeric" argument="--range 1-255"/> </constraint> <constraintErrorMessage>hop-count must be a value between 1 and 255</constraintErrorMessage> </properties> <defaultValue>10</defaultValue> </leafNode> <leafNode name="max-size"> <properties> <help>Maximum packet size to send to a DHCPv4/BOOTP server</help> <valueHelp> <format>u32:64-1400</format> <description>Maximum packet size</description> </valueHelp> <constraint> <validator name="numeric" argument="--range 64-1400"/> </constraint> <constraintErrorMessage>max-size must be a value between 64 and 1400</constraintErrorMessage> </properties> <defaultValue>576</defaultValue> </leafNode> <leafNode name="relay-agents-packets"> <properties> <help>Policy to handle incoming DHCPv4 packets which already contain relay agent options</help> <completionHelp> <list>append replace forward discard</list> </completionHelp> <valueHelp> <format>append</format> <description>append own relay options to packet</description> </valueHelp> <valueHelp> <format>replace</format> <description>replace existing agent option field</description> </valueHelp> <valueHelp> <format>forward</format> <description>forward packet unchanged</description> </valueHelp> <valueHelp> <format>discard</format> <description>discard packet (default action if giaddr not set in packet)</description> </valueHelp> <constraint> <regex>(append|replace|forward|discard)</regex> </constraint> </properties> <defaultValue>forward</defaultValue> </leafNode> </children> </node> <leafNode name="server"> <properties> <help>DHCP server address</help> <valueHelp> <format>ipv4</format> <description>DHCP server IPv4 address</description> </valueHelp> <multi/> <constraint> <validator name="ipv4-address"/> </constraint> </properties> </leafNode> </children> </node> </children> </node> </interfaceDefinition>