System log: tun_wg0: loop detected

pfguy2018 · Dec 5, 2021, 6:25 PM

I have WG up and running in a "road warrior" mode - seems to work exactly as expected. But when I check the system logs, I see multiple messages of "tun_wg0: loop detected" in a row - typically 10-20 in rapid succession. There don't appear to be any other log entries immediately before or after.

Any ideas what could be causing this or how to fix it?

pfguy2018 · Dec 7, 2021, 1:42 AM

Anyone have any suggestions?

cmcdonald · Dec 22, 2021, 6:02 PM

@pfguy2018 Are you reusing the same subnet on the tunnel as on your LAN? WG is Layer3, so you can't pass ethernet frames across the tunnel, only IP packets. Sounds like a conflict somewhere

pfguy2018 · Dec 22, 2021, 6:03 PM

@cmcdonald

Thanks for responding. The problem was solved in another thread: https://forum.netgate.com/topic/168357/system-log-tun_wg0-loop-detected?_=1640196156974