On 8/13/2015 10:59 AM, james woodyatt wrote: > On Aug 12, 2015, at 21:35, Henning Rogge <[email protected] > <mailto:[email protected]>> wrote: ... >> If you have a duplicate MAC then DAD will not safe you... you cannot >> communicate anyways because of a layer-2 problem. > > Yes, and DAD also has logic that limits the damage on the entire network > when hosts join with duplicate L2 addresses, c.f. section 5.4.5 of RFC 4862.
Also, a duplicate L2 is a problem at L2 only when both L2s are on the same L2 subnet. It's entirely possible that the two L2s are on different L2 subnets but on the same L3 subnet. E.g., consider point-to-point links to the router. No reason to care about the L2s at all (interface is all you need to determine the remote end), but nodes that self-address using identical L2s would create identical L3's. Joe _______________________________________________ homenet mailing list [email protected] https://www.ietf.org/mailman/listinfo/homenet
