Michael, On Aug 12, 2012, at 9:20 AM, Michael Richardson wrote:
> >>>>>> "Bob" == Bob Hinden <bob.hin...@gmail.com> writes: > Bob> True, but the odds of this happening are very low. I wonder if > Bob> we have any data on DAD detecting duplicate addresses and their > Bob> cause. > > In my experience, MAC address duplicates are almost always the result of > too-true copy&paste'ing of virtual machine configurations :-) > (You want to duplicate the virtual machine in order to try an upgrade...) > > Bob> For example, has any seen any actual duplicate MAC addresses? > Bob> It would be good to collect some data. > > if you remove 00:00:00:00:00:00 and ff:ff:ff:ff:ff:ff from the list, > I've never seen a duplicate. (all-zeros and all-ones are the result of > the eeprom dying in various ways, or a driver getting confused. Both > will work until you get a second machine with the same problem) > Thanks, very helpful. Bob -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
