<filter name='no-arp-mac-spoofing' chain='arp-mac' priority='-520'>
  <uuid>7416001b-89a2-4ac0-b3da-7c2925a1d58c</uuid>
  <rule action='return' direction='out' priority='350'>
    <arp arpsrcmacaddr='$MAC'/>
  </rule>
  <rule action='drop' direction='out' priority='1000'/>
</filter>

