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SubjectRe: renaming kernel devices [was: VIA EPIA EK: strange eth dev numbering]
On Thu, 2 Aug 2007, Ondrej Zajicek wrote:

>
> On Thu, Aug 02, 2007 at 01:47:23PM +0200, Jan Engelhardt wrote:
>> It does not rename ethX to the "next free" one, but to a _persistent_ one.
>> If it were a "next free" thing, then removing a card would shuffle all
>> your eth around again (and invalidate your iptables rules at the same
>> time, to note).
>
> It is questionable what is _persistent_ . MAC-based names are persistent
> with regard to adding and removing of other cards, 'Plain' names are persistent
> with regard to replacing that card with different item (of a same kind).
>
> I am very happy that (using 'plain' names) i can send technician to
> replace broken NIC in our routers without need for configuration
> change.

this is a very important point, and with the distros (and many kernel
people) treating udev as a requirement this is going to bite a lot of
people.

David Lang
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