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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>
          <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>
              </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>