On 11/08/2012 22:39, Karl Auer wrote: > On Sat, 2012-08-11 at 18:01 +0200, sth...@nethelp.no wrote: >> Duplicate MAC addresses are regularly seen in the wild. > > It's important to remember that DAD is link local. It is only checking > whether the same address occurs on the local link. Duplicate MAC > addresses are not actually a problem as long as the duplicates are not > on the same link.
I think they are a problem for sites that register MAC addresses and use them as a first-line authentication mechanism. Obviously that is very weak from a security point of view, but it's common practice. Brian -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
