In article <Pine.BSF.3.96.980414033154.4326B-100000@workhorse.iMach.com>, "Forrest W. Christian" <forrestc@iMach.com> wrote:

On another note, could someone please mention again which IOS has the cool "drop all packets from an interface which we don't have a matching route pointing the other direction" feature?

11.1CC. I think the command is `ip verify unicast reverse-path' in the interface config. It works on the CEF table, so you *must* enable CEF, or it will just drop all packets. -- Shields, CrossLink.