libvirt/tests/nwfilterxml2xmlin/arp-test.xml

<filter name='testcase'>
  <uuid>5c6d49af-b071-6127-b4ec-6f8ed4b55335</uuid>
  <rule action='accept' direction='out'>
     <arp srcmacaddr='1:2:3:4:5:6' srcmacmask='ff:ff:ff:ff:ff:ff'
          protocolid='arp'
          dstmacaddr='aa:bb:cc:dd:ee:ff' dstmacmask='ff:ff:ff:ff:ff:ff'
          hwtype='12'
          protocoltype='34'
          opcode='Request'
          arpsrcmacaddr='1:2:3:4:5:6'
          arpdstmacaddr='a:b:c:d:e:f'/>
  </rule>

  <rule action='accept' direction='out'>
     <arp srcmacaddr='1:2:3:4:5:6' srcmacmask='ff:ff:ff:ff:ff:ff'
          opcode='1' hwtype='255' protocoltype='255'/>
  </rule>

  <rule action='accept' direction='out'>
     <arp srcmacaddr='1:2:3:4:5:6' srcmacmask='ff:ff:ff:ff:ff:ff'
          opcode='11' hwtype='256' protocoltype='256'/>
  </rule>

  <rule action='accept' direction='out'>
     <arp srcmacaddr='1:2:3:4:5:6' srcmacmask='ff:ff:ff:ff:ff:ff'
          opcode='65535' hwtype='65535' protocoltype='65535' />
  </rule>

  <rule action='accept' direction='out'>
     <arp srcmacaddr='1:2:3:4:5:6' srcmacmask='ff:ff:ff:ff:ff:ff'
          opcode='65536' hwtype='65536' protocoltype='65536' />
  </rule>

  <rule action='accept' direction='in'>
     <arp gratuitous='true'/>
  </rule>
</filter>