lkml.org 
[lkml]   [2002]   [Sep]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] IPv6: Improvement of Source Address Selection
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


-
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/

\
 
 \ /
  Last update: 2005-03-22 13:29    [W:0.091 / U:0.120 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site