> On Wed, 17 Sep 2003 [EMAIL PROTECTED] wrote: > > MAC addresses are not without authority delegation. The IEEE is the ultimate > > authority in said case. > > > > Any solution which requires uniqueness also requires a singular ultimate > > authority. > > Even MACs aren't entirely unique. Some places used to assign MAC > addresses like they assigned IP addresses and the NIC had to be > reconfigured for the assigned MAC. An admin was freely able to assign a > MAC to Joe Blow using a 3Com or Cisco OUI without fear of retribution. I > personally have never seen any use in such a thing but obviously someone > did. > > Justin
manufacturer assigned macs are guaranteed to be globally unique. A specific enterprise reconfiguring the mac is akin to an enterprise using RFC1918 space.
