I'm trying to copy/rebroadcast an incoming multicast channel from one address to another, so I figured socat would let me do this.
If I already have something joined to that network and logging to console:
./socat UDP4-RECVFROM:14314,reuseaddr - | ./socat - udp-sendto:239.160.2.13:14314
or if I don't:
./socat UDP4-RECVFROM:14314,ip-add-membership=233.158.8.5:0.0.0.0 - | ./socat - udp-sendto:239.160.2.13:14314
But these exit after the first packet or so, so then I figured adding, fork would help but that just seems to create another publisher for every packet received so there was a massive echo.
Any suggestions please on how to fix this? I've tried the dest-unreach cheatsheet but nothing there seems to match my exact need. I'm probably missing something really obvious.