Re: Ethernet device names change Bullseye => Bookworm. How to assign unchanging name to device?

[Markus Schönhaber]

20.06.23, 08:36 +0200, Rick Thomas:


I've been upgrading my machines Bullseye => Bookworm recently.  In a few of these 
upgrades, the name of the ethernet device changed.  (E.g. enP2p32s15f0 => 
enP2p0s15f0)  This required changes to /etc/network/interfaces in order to start up 
the interface.

This is only a minor inconvenience (though it may require me to take a drive 
out 30 miles to the location where a few of these machines reside -- no 
problem, it's a beautiful drive!)

However, I seem to remember that once upon a time there was a way to get (I think it 
involved udev) the system to assign an arbitrary name (e.g. (enet0") to a given 
interface based on something that doesn't change when the firmware/driver gets 
upgraded. For example, the MAC address for an Ethernet interface would be a good 
basis.

The trouble is that it was a while ago and I can't remember how to do that?

Any hints will be appreciated.  Pointers to documentation on the subject would 
be especially helpful!


systemd.link should be a way to get this done:



--
Regards
  mks

Ethernet device names change Bullseye => Bookworm. How to assign unchanging name to device?

[Rick Thomas]

I've been upgrading my machines Bullseye => Bookworm recently.  In a few of 
these upgrades, the name of the ethernet device changed.  (E.g. enP2p32s15f0 => 
enP2p0s15f0)  This required changes to /etc/network/interfaces in order to 
start up the interface.

This is only a minor inconvenience (though it may require me to take a drive 
out 30 miles to the location where a few of these machines reside -- no 
problem, it's a beautiful drive!)

However, I seem to remember that once upon a time there was a way to get (I 
think it involved udev) the system to assign an arbitrary name (e.g. (enet0") 
to a given interface based on something that doesn't change when the 
firmware/driver gets upgraded. For example, the MAC address for an Ethernet 
interface would be a good basis.

The trouble is that it was a while ago and I can't remember how to do that?

Any hints will be appreciated.  Pointers to documentation on the subject would 
be especially helpful!

Thanks in advance!
Rick