> > I have in mid multiple ISPs for redundancy, perhaps a pair of OC12s or
> > similar. Sites would be reachable from either, but fewer hops to one or
> > the other. When the client connects, it avoids asymmetric routing to reply
> > on the same router.
>
> I understand everything but the last sentence. You have a couple of
> redundant ISP links which can all act as a router to the Internet, the
> only difference is that if you go over some of them you need less hops.
> Now in order to avoid asymmetric routing you need the hidden patch? I
> apologise for being so narrow minded but I still don't get it.
Don't. You are right about this one, a client originated connection will
have an ARP entry and route back by the original route. Connections
originated on the dual-homed system might put a packet out on either NIC,
from any IP, that's a different issue, and the whole hidden interface
patch really doesn't address it.
I was mixing things from two problems I've seen, sorry for any confusion.
-- bill davidsen <davidsen@tmr.com> CTO, TMR Associates, Inc Doing interesting things with little computers since 1979.- 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/