On Sat, 28 Sep 2002 kuznet@ms2.inr.ac.ru wrote:
> > Or would you have an already-sorted list of possible candidate addresses
> > for each route in the order of preference?
>
> I am not mad yet. :-)
>
> What preference? You must select _one_ address, you do not need lost
> candidates.
In the case the first entry goes away, having a list could help being able
to the next one to use very easily. But this probably just an
implementation detail.
> > And recalculate always when address changes?
>
> What address? Interface address? Routing tables used to be synchronized
> to this.
Any address.
One notable case is that the outgoing interface has only link/site-local
addresses and the destination is global. There are other cases too.
> > This is IMO a wrong approach from user's perspective. Perhaps not if the
> > algorithm was run and e.g. additional, temporary "address selection"
> > routes were created by kernel.
> >
> > > > (stuff that's network prefix -independent
> > >
> > > I am sorry, I feel I do not understand what you mean.
> >
> > Hmm.. this depends on the interpretation of the concept above. If the
> > list is refreshed always when addresses change or change state, this could
> > perhaps work..
>
> I am afraid I do not understand what "address", "state", "temporary" routes
> etc you mean. It remained in your brains. :-)
>
> Pekka, are you not going to sleep? (I am.) I bet when you reread this tomorrow,
> you will not blame that my brains eventually falled to "parse error" loop. :-)
I had already woken up :-).
At least BSD and I think Linux create ad-hoc, "cloned" routes e.g. in Path
MTU discovery process to hold some different values. I don't remember the
details. I was wondering if this would be done the same or not.
change state = move to deprecated, move to non-deprecated.
Hope this clarifies.
-- Pekka Savola "Tell me of difficulties surmounted, Netcore Oy not those you stumble over and fall" Systems. Networks. Security. -- Robert Jordan: A Crown of Swords- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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