<filter name='testcase' chain='root'>
  <uuid>f4b3f745-d23d-2ee6-218a-d5671611229b</uuid>
  <rule action='accept' direction='in' priority='500'>
    <icmp type='0'/>
  </rule>
  <rule action='accept' direction='out' priority='500'>
    <icmp type='8'/>
  </rule>
  <rule action='drop' direction='inout' priority='600'>
    <icmp/>
  </rule>
</filter>
