[systemd-devel] Udev won't rename interfaces that are already UP

[Tom Gundersen]

On Wed, Feb 18, 2015 at 9:58 PM, Giancarlo Razzolini
<grazzolini at gmail.com> wrote:
> You are talking about userspace
> *after* initramfs and *after* systemd is initialized and renamed (or not)
> any interface. Of course systemd should *never* mess with an interface
> *after* system initialization. But it can do anything *right after* the
> initramfs hand the control to systemd. Of course except if the interface is
> up for a nfsroot. In this case the renaming shouldn't happen. But this is an
> exception.

We cannot know in udev why an interface is UP. I would say that if
your initramfs brings an interface up it should take it back down
again if it is not needed any longer (in most cases I guess it _will_
be needed).

Cheers,

Tom