<domain type='kvm'>
    <interface type='bridge'>
      <mac address='52:54:00:18:8c:fb'/>
      <source bridge='br0'/>
      <virtualport type='openvswitch'>
        <parameters interfaceid='0de2f9d3-6dd4-8aee-c3a9-10a6a42eda3a'/>
      </virtualport>
      <model type='virtio'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
    </interface>
</domain>