[systemd-devel] eth2: Failed to rename network interface 6 from 'eth2' to 'eno1': File exists

[Harald Dunkel]

On 2022-01-04 16:14:16, Andrei Borzenkov wrote:
> 
> You have two interfaces which export the same onboard interface index.
> There is not much udev can do here; the only option is to disable
> onboard interface name policy. The attributes that are used by udev
> are "acpi_index"  and "index". Check values of these attributes for
> all interfaces.
> 

I will check, but please note that I didn't enable this. AFAIU Debian
uses the settings according to the guidelines of upstream.

> 
> As is obvious from the log you provided, they did not "keep" their
> names but were renamed. Whether this is correct depends on rules your
> distribution is using.
> 

AFAICS the kernel of today still assigns the "legacy" interface names,
which are renamed by udev later. I would suggest to improve conflict
handling in udev, e.g. by falling back to the "non-onboard" interface
names for renaming, instead of an exit(1). This makes sure that only
the on-board interfaces are affected, not a random set of interfaces
depending upon the discovery sequence.


Regards

Harri