On Mon, 17 Apr 2006, Erdem Sener wrote: > I mean, let's assume we have an M series router with a bunch of > interfaces. Let's add a source address 1.2.3.4/32 that we don't want > to transit via any interface over the router. > > any ideas besides applying a firewall filter to _all_ interfaces? how about a local discard route and uRPF?