RE: Source address selection insufficient?

[Erik Nordmark <Erik.Nordmark@sun.com>]

> Source address selection will work in a lot of practical cases, e.g.
> whenever there is a "default" route. Source address selection is also
> adequate in some very practical multi-homing cases, where the different
> site exits lead to disjoint subsets of the Internet -- back-door routing
> scenarios.

Let me make an analogy regarding TCP checksums:
In most practical cases the packets are not corrupted, and of those few 
corruptions that occur practically all are caught by L2 CRCs.

Hence, by analogy, we don't need any checksums in TCP??

When engineering solutions to ingress filtering I'd prefer
if be pick solutions which work indendently of what the routing tables
look like.

   Erik