libvirt/examples/xml/nwfilter/qemu-announce-self-rarp.xml

<filter name='qemu-announce-self-rarp' chain='rarp'>
  <rule action='accept' direction='out' priority='500'>
    <rarp opcode='Request_Reverse'
          srcmacaddr='$MAC' dstmacaddr='ff:ff:ff:ff:ff:ff'
          arpsrcmacaddr='$MAC' arpdstmacaddr='$MAC'
          arpsrcipaddr='0.0.0.0' arpdstipaddr='0.0.0.0'/>
  </rule>
  <rule action='accept' direction='in' priority='500'>
    <rarp opcode='Request_Reverse'
          dstmacaddr='ff:ff:ff:ff:ff:ff'
          arpsrcmacaddr='$MAC' arpdstmacaddr='$MAC'
          arpsrcipaddr='0.0.0.0' arpdstipaddr='0.0.0.0'/>
  </rule>
</filter>
nwfilter: let qemu's after-migration packet pass Qemu currently sends an Ethernet packet with protocol id 0x835 once a VM was successfully migrated. The content of the packet looks like a gratuitous RARP, just with the wrong protocol ID, which should be 0x8035. I wrote some filters to let either one of the packets pass and am adapting the clean-traffic sample filter to use it. I am also doing some changes on the existing ARP filter which was lacking a test for source MAC address. 2010-04-27 18:50:35 +00:00			`<filter name='qemu-announce-self-rarp' chain='rarp'>`
			`<rule action='accept' direction='out' priority='500'>`
			`<rarp opcode='Request_Reverse'`
			`srcmacaddr='$MAC' dstmacaddr='ff:ff:ff:ff:ff:ff'`
			`arpsrcmacaddr='$MAC' arpdstmacaddr='$MAC'`
			`arpsrcipaddr='0.0.0.0' arpdstipaddr='0.0.0.0'/>`
			`</rule>`
			`<rule action='accept' direction='in' priority='500'>`
			`<rarp opcode='Request_Reverse'`
			`dstmacaddr='ff:ff:ff:ff:ff:ff'`
			`arpsrcmacaddr='$MAC' arpdstmacaddr='$MAC'`
			`arpsrcipaddr='0.0.0.0' arpdstipaddr='0.0.0.0'/>`
			`</rule>`
			`</filter>`