<filter name='no-arp-mac-spoofing' chain='arp-mac' priority='-520'>
  <uuid>18d73615-efc7-415e-829a-42da8f6b5b08</uuid>
  <rule action='return' direction='out' priority='350'>
    <arp arpsrcmacaddr='$MAC'/>
  </rule>
  <rule action='drop' direction='out' priority='1000'/>
</filter>

