mDNS support in guarddog (avahi)?

OK for the life of me I can't allow mDNS in guarddog.
I tried the config below and with/without a new zone
with address 224.0.0.0/{4,24} to no avail.

<protocol name="mDNS - Avahi">
   <longname>Avahi - Directory discovery service</longname>
   <description>A protocol based on mDNS used to enable automatic directory
   service discovery, also known as Rendevouz/Bonjour/Zeroconf/</description>
   <classification class="net"/>
   <network>
     <udp source="client" dest="server">
       <description>Request connection.</description>
       <source><port portnum="5353"/></source>
       <dest><port portnum="5353"/></dest>
     </udp>
   </network>
   <security threat="high" falsepos="low"/>
   <reference href="http://www.robertgraham.com/pubs/firewall-seen.html">
   FAQ: Firewall Forensics (What am I seeing?)</reference>
</protocol>

Any help is appreciated...

	.bill



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