What are the firewall rules to allow traffic to Avahi?
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Avahi and system 2.5 don't seem to get along so I'm deploying a new router in a VM specifically for Avahi. That's multicast though, so I'm a little lost on what traffic destination to allow so Avahi can forward multicast traffic without risking asymmetric routing.
I figured, allowing traffic only to the interface's IP address of each VLAN, but then I remembered this is multicast, sitting on a whole different range from RFC1918.
What's its point of ingestion for data, does an interface for Avahi even need an IP address at all? Is it somewhat like DHCP Relay switching completely protocols on the back? Can multicast be relaid without an IP address like PPPoE or ethernet frames?? I know that makes no sense since bc it's IP, but y'know…if I don't eliminate possibilities I'll keep wondering.
If you feel like teaching a little, please !
