Avahi mDNS on Wireguard

[cypherpunk]

Hi,

I've managed to successfully access my local network through Wireguard.

Now I'm looking into using the Avahi mDNS repeater which I've already setup on the firewall to repeat over the 172.16.16.0/24 subnet which I use for WG peers. Despite selecting the wg0 Interface in the Avahi web config (in addition to other VLANs I had previously), and adding 224.0.0.251/32 to the WG Peer "Allowed IPs" box in pfSense (my client's allowed IPs are 0.0.0.0/0), I can't seem to get it working. My clients can't pick up any mDNS devices. I've attached a photo of my pfSense WG Peer config for reference. I've also attached a snipped of my pfTop output for port 5353, looks like my WG subnet (172.16.16.1) is sending mDNS request to 224.0.0.251...

I also have the "Repeat mdns packets across subnets" option in Avahi enabled too.

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[dennypage]

@cypherpunk AFAIK, the pfSense Wireguard implementation does not support multicast.

Mentioned in the doc here.