Messages in this thread | | | Date | Sat, 28 Sep 2002 07:35:57 +0300 (EEST) | From | Pekka Savola <> | Subject | Re: [PATCH] IPv6: Improvement of Source Address Selection |
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On Sat, 28 Sep 2002 kuznet@ms2.inr.ac.ru wrote: > Hello! > > > Alexey, I still am not clear, this belongs in the output routing logic > > right? > ... > > where source address selection belongs. > > Yes, it naturally belongs to the time when route is created. > > This is just extending ipv6 routing entry with a field to hold > source address and, generally, making the same work as IPv4 does, > with all the advantages, particularily capability to select preferred > source address via routes set up by admin (RTA_PREFSRC attribute, > "src" in "ip route add").
Umm.. you sure?
Isn't putting this logic to routes an oversimplification?
Consider e.g. a dummy host which only have a few address (link-local, site-local, global; the last two /64's) and, basically, a default route (plus of course an interface routes for those /64's).
When talking to other subnets within the site (ie. those not on the /64) one would have difficulties parsing the source address from the default route, as there would have to be at least two candidates there.
Am I missing something obvious here?
Alexey's approach should work in some simpler cases, but maybe not all (stuff that's network prefix -independent like home addresses, privacy addresses etc. would be different).
-- 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
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