Joe Touch > Routing is the transitive closure of unidirectional reachability.
You need known and usable unidirectional reachability. If A can reach B, but A has no idea of that, then that's not usable for routing. > Yes, there could be an odd situation where IP HELLO datagrams can > transit a link where other IP datagrams cannot, but in that case RFC6130 > would determine forwarding entries that wouldn't do much good. (That is in fact a real problem when using IEEE 802.11 as your L2, but that's not the point here.) And there's another issue that happens in RFC 6130 and ad hoc routing protocols. You don't know who can hear you until they let you know. You find them using local broadcast. > That RFC does imply that control message reachability implies IP > reachability. Not until you've confirmed a return path, so, no to the above. ******************************************************************** This email and any attachments are confidential to the intended recipient and may also be privileged. If you are not the intended recipient please delete it from your system and notify the sender. You should not copy it or use it for any purpose nor disclose or distribute its contents to any other person. ******************************************************************** _______________________________________________ Int-area mailing list [email protected] https://www.ietf.org/mailman/listinfo/int-area
