I setup multi-WAN recently with the Comcrap LTE modem and mDNS repeater stopped working.
I have 2 interfaces; one trusted and one guest. Trusted has 10.18.1.0/24 and Guest has 172.18.1.0/24 on it. I have a rule to pass traffic from a handful of 172.18.1.0/24 IPs to a handful of 10.18.1.0/24 IPs. ICMP/Telnet/HTTP/etc. all work. I ran mdns-repeater in a screen on the router so I could watch with debug enabled. I see essentially nothing:
# /usr/local/bin/mdns-repeater -p /var/run/mdns-repeater.pid -f em0 em2
mdns-repeater: dev em0 addr 10.19.76.1 mask 255.255.255.0 net 10.18.1.0
mdns-repeater: dev em2 addr 172.19.76.1 mask 255.255.255.0 net 172.18.1.0
From both wired and wireless clients I can see mDNS/Bonjour devices without issue given I am on that particular network.
I assume this has something to do with multi-WAN, but I'm at a bit of a loss as to where to start.
Thanks in advance for any ideas.
Did you ever manage to solve this issue? Facing the same problem here currently and trying to find some solution for it.