> At layer 2, yes, but you haven't done anything at layer 3, and NUD/ND will > pick up the new layer3:layer2 relationship.
There is also a privacy angle to this. Suppose that a visitor to a café changes their MAC address in order to avoid tracking. Keeping the same IP addresses would somewhat defeat the purpose. Of course, there is always a way to use "ipconfig renew" or some equivalent command, but you have a race condition between "starting to use the new MAC" and "removing the old address." The only way to address that condition is to make MAC change and address renewal an atomic operation. -- Christian Huitema -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
