On 2024-10-16 20:02:14 -0400, Stephen Wiley wrote: > I think he wants to relay multicast packets across network boundaries > not just answer mdns queries. If he was willing to maintain a zone > himself he'd probably be happiest with a bind instance anyway.
One way is a pair of daemons that accept and retransmit multicast from one network to another through a tunnel while ideally excluding the just bridged traffic from retransmission. Maybe it could be done with socat or some other fancy network proxy, though the one I dealt with ~15 years ago was custom written inhouse. Also if the bridge causes network weirdness, good luck. Also you may need to worry about missed or delayed multicast due to latency or the bridge or daemons being down? Pretty sure most of the issues were due to the (complicated, Enterprise) software that used multicast and not the custom multicast bridge.