On Tue, 01 Dec 2015 14:28:47 -0500 (EST)
David Miller <da...@davemloft.net> wrote:

> From: Stephen Hemminger <step...@networkplumber.org>
> Date: Tue, 1 Dec 2015 08:06:52 -0800
> 
> > On Tue, 01 Dec 2015 17:02:23 +0100
> > Hannes Frederic Sowa <han...@stressinduktion.org> wrote:
> > 
> >> 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?
> > 
> > Also current versions of SNMP provide more useful information about
> > network interface slot information in ifDescription
> 
> Well if they do provide strings, then that is probably a better way
> forward than messing with the kernel.

It gives strings based on PCI information but nothing useful
on tunnels.
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