[arch-general] Linux server crash causing router switch to stop working

Łukasz Michalski lm at zork.pl
Fri Jan 21 22:08:05 UTC 2022

On 1/21/22 18:54, David Rosenstrauch via arch-general wrote:
> I figured the issue was a problem with my wifi router, but after much 
> debugging I don't think that's the case.  I have a new (Arch) linux 
> server I built a few weeks ago.  What seems to be happening is that my 
> server crashes for some reason - and then looks like it's causing the 
> ethernet LAN switch inside my router to stop working.  (I verified 
> that when I unplug the server's network cable the router starts 
> working again, and when I plug it back in the router stops.)
When it crashes, instead of reconnecting router connect any laptop with 
arch booted from usb. If link comes up then use tcpdump to see what is 
happening on the wire.


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