> Hi,
> 
> I didn’t change anything on my laptop or on the ethernet settings etc.
> 
> and earlier I didn’t have this problem
> 
> It appeared since some weeks and is a new problem.
> 
> That’s why I think there should be a solution
> 
> Kind regards
> 
> Gottfried

Have you by any chance installed/used some virtual machine emulators
recently? Qemu or something similar? The internet suggests the
problematic virbr0 may be created by libvirt which is a dependency of
Qemu.

IIUC, virbr0 is sort of a virtual internet "connection" created
specifically for communication with one's virtual machine(s). Here it
seems Network Manager is confusing virbr0 for the true connection that
it is meant to bring up


Best,

Wojtek

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On Wed, 12 Apr 2023 15:18:57 +0000
Gottfried <gottfried@posteo.de> wrote:

> Hi,
> 
> I didn’t change anything on my laptop or on the ethernet settings etc.
> 
> and earlier I didn’t have this problem
> 
> It appeared since some weeks and is a new problem.
> 
> That’s why I think there should be a solution
> 
> Kind regards
> 
> Gottfried
> 
> 
> Am 12.04.23 um 13:30 schrieb Dr. Arne Babenhauserheide:
> > 
> > Gottfried <gottfried@posteo.de> writes:
> >   
> >> I connect my laptop via ethernet cable, LAN, to a router  
> > 
> > I have the same problem, but I don’t know a solution. I have the problem
> > since I replaced my old CPU with a new Ryzen.
> > 
> > Best wishes,
> > Arne  
>