<network>
  <name>fuel1</name>
  <forward mode='nat'>
    <nat>
      <port start='1024' end='65535'/>
    </nat>
  </forward>
  <bridge name='fuel1' stp='on' delay='0'/>
  <ip address='10.20.0.1' netmask='255.255.255.0'>
  </ip>
</network>