interface renaming (was: Re: Moving towards NetworkManager)

Tom H tomh0665 at
Sat Jul 30 15:57:59 UTC 2016

On Sat, Jul 30, 2016 at 8:03 AM, Josef Wolf <jw at> wrote:
> The question is: what EXACTLY does "predictable interface name" mean?

It means that you can, for the same kernel, replace a NIC with
another, and have them both have the same name.

With the previous mechanism of naming via a correspondence between a
MAC address and a name with a rule in "/etc/udev/rules.d/", if you
replaced a NIC and it was called ethX, the replacement would be ethY,
unless you edited the NIC-naming rule.

The old way was OK if you had a couple of NICs, but once you had half
a dozen NICs on a box, ...

More information about the ubuntu-users mailing list