netdev - Re: [RFC] Stable interface index option

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Date:	Tue, 01 Dec 2015 17:02:23 +0100
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	Maximilian Wilhelm <max@...2324.org>, netdev@...r.kernel.org
Subject: Re: [RFC] Stable interface index option

On Tue, Dec 1, 2015, at 16:50, Maximilian Wilhelm wrote:
> > I'm not sure I understand how this would work- are we going to 
> > pin down the ifindex for some subset of interfaces?
> 
> I'm not sure what your idea is, but I guess we might mean the same
> thing:
> 
> What I have in mind is that the user can supply a list of (ifname ->
> ifindex) entries via a sysfs/procfs interface and if such a list is
> present, the kernel will search the list for every ifname which is
> registered and check if there is an entry. If there is, the ifindex
> for this entry is used. If there is no entry found for the given
> ifname, the usual algorithm is used (therefore inherently providing
> backward compatibility).

Sorry to ask because I don't like this feature at all. There was a lot
of work on stable interface names. Why do you need stable ifindexes,
which were never meant to be stable for a longer amount of time?

Bye,
Hannes
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