[Babel-users] Source-specific routes

[Henning Rogge]

Ahh,

mixed up the two "source" attributes for routing entries. Sorry about this.

On Sun, May 5, 2013 at 10:36 PM, Juliusz Chroboczek
<jch at pps.univ-paris-diderot.fr> wrote:
>> We have run into the same thing a few years ago, source IP selection
>> in IPv6 is always done by the kernel, not the user.
>
> That's not about source IP selection (which is done using RTA_DEFSRC,
> which we haven't tested, and which is not our business anyway since
> it's an end-node function), but about having multiple routes to the
> same destination which are chosen according to the *source* address of
> the routed packets.  It's a weak form of source routing -- it allows
> the end node to influence routing (by chosing a specific source
> address) while still leaving routing firmly in control of the routers.

I think Markus Kittenberger had thought about using the flag you were
talking about for stable gateway selection. He ran into some trouble
and we switched to IPIP tunnels, but I have to contact him if he
remembers how well RTA_SRC worked. There is also (as you most likely
know) a Policy Rule selector based on the src-ip prefix. Not sure if
this one is working correctly.

Henning Rogge
--
We began as wanderers, and we are wanderers still. We have lingured
long enough on the shores of the cosmic ocean. We are ready at last to
set sail for the stars - Carl Sagan