Never mind. I needed to do

ip link set [interface] multicast on

That fixed it.


> On May 30, 2020, at 11:10 AM, Nick Sayer <nsa...@kfu.com> wrote:
> 
> I have avahi-daemon 0.7 running on a raspberry pi. I have set up a GRE tunnel 
> to another pi and wish to have avahi on both ends of the tunnel reflect mDNS 
> across the tunnel.
> 
> I’ve set allow-point-to-point=yes and enable-reflector=yes, but when I 
> attempt to run avahi-daemon —debug, I see it making no attempt to probe or 
> discover the point to point interface at all.
> 
> I did find mdns-repeater on the Internet, and that does work, except that the 
> two hosts on either end of the GRE tunnel won’t participate since they don’t 
> see transmitted traffic from mdns-repeater and, of course, they’re not 
> listening on the tunnel.
> 
> Why doesn’t allow-point-to-point=yes actually work?

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