[Intel-wired-lan] Bug 216257 - igc: Detected Tx Unit Hang after losing carrier, sporadic resets and connectivity loss with Intel I225-V

[Intel-wired-lan] Bug 216257 - igc: Detected Tx Unit Hang after losing carrier, sporadic resets and connectivity loss with Intel I225-V

[xnor]

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Hello,
I've reported this bug a while ago on bugzilla.kernel.org but haven't seen any
indication that the bug has even been looked at:
https://bugzilla.kernel.org/show_bug.cgi?id=216257

I have a router with multiple Intel I225-V (rev 03) ethernet controllers.
Three of them, namely eth0, eth1 and eth2 are bridged (br-lan).

Initially, I used Linux 5.18.11. After suspending a computer connected through
eth0, errors started showing up in dmesg and packet loss increased.

With different kernel versions (several 5.15 lts version, 6.0.1) I'm now only
seeing a sudden loss of connectivity on br-lan and a registers dump in dmesg.
The trigger for this seems almost random now, but happens once every couple of
days in the morning hours.

Some of the dmesg snippets at the time of the errors are attached to the bug
report, though I can also send them here if need be.
Same goes for kernel versions, configs and any other info needed.


Thank you for any help.

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