WAN goes UP and DOWN constantly after disconnecting WAN and plugging back in

[diablo]

Hi guys,

I've had this issue for a while, but now have a few more facts. Basically I get in dmesg:

igb1: link state changed to DOWN
igb1: link state changed to UP
igb1: link state changed to DOWN
igb1: link state changed to UP
igb1: link state changed to DOWN
igb1: link state changed to UP
igb1: link state changed to DOWN
....
wash, rinse, repeat ...

repeating if either I unplug my WAN (ibg1) cable and then plug it back in, or my cable ISP goes offline then back online. I have to reboot the OPNsense to clear it.... :-/

The NIC is a igb1: <Intel(R) PRO/1000 Network Connection, Version - 2.5.3-k

on an APU2C4 mobo.

Connected to the WAN is an Arris cable modem in bridge mode.

I'm curious if others are having the same issue, especially with the APU mobos.

I've Googled around, and seems it also happens with some other network cards but I've seen no solid solution.

If anyone can help or run a test I'd be very grateful.

Best wishes to you all

[ky41083]

I've solved this before by changing the interface link settings to "default", rather than forcing auto or some other mode under the settings for each individual interface.

I know this post is old. Just came across it looking for leads to another issue, and there were no replies...

[franco]

Try this for igb misbehaving: https://forum.opnsense.org/index.php?topic=5511.msg23591#msg23591

Werner tested some more on the upcoming FreeBSD 11.1 for OPNsense 18.1, it seems to be working better with 99% certainty (an isolated incident gave trouble, but we are not sure it was related).


Cheers,
Franco