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<?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>
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