On Nov 14, 2012, at 13:34 , Mikael Abrahamsson <[email protected]> wrote: > > I've always seen it to be solved via some kind of source based routing > automatically discovered between the ISP routers.
My point is that it isn't sufficient to handle this problem at just the routers. At a minimum, the *hosts* need to be told which default router to use with each source prefix. Right now the only mechanism that comes close to doing that is ICMPv6 Redirect, which isn't suitable for addressing this problem. This problem might not be so troubling if hosts didn't expect any and all of the default routers on a link either to forward packets with source addresses having prefixes they don't advertise, or to send a redirect for the destination to one that will. Alas, hosts do have such an expectation, and that's not going to change any time soon. -- james woodyatt <[email protected]> core os networking _______________________________________________ homenet mailing list [email protected] https://www.ietf.org/mailman/listinfo/homenet
