I prefer this latest wording. I was puzzled why there was any difference between EUI-48 and MAC-48, and was about to start searching when you provided the answer. I think it's best not to imply there's anything more to this than there actually is.
FF-FE resulted from some misinterpretation in the past, and so be it. Bert > -----Original Message----- > From: Bob Hinden [mailto:[EMAIL PROTECTED] > Sent: Friday, January 20, 2006 5:24 PM > To: JINMEI Tatuya / 神明達哉; IPv6 WG > Subject: Re: why 0xFFFE is used in the modified EUI-64 format > > One more thing, > > On Jan 20, 2006, at 12:10 PM, Bob Hinden wrote: > > > .... > > They both use the same 24-bit OUI values. It looks to me > like IEEE > > decided to deprecate the name MAC-48. Why IEEE choose to have two > > different ways to create EUI-64 from these 48-bit identifiers is a > > mystery to me. As far as bits on the wire, EUI-48 and MAC-48 > > appear to be exactly the same. The link in Jinmei's email that > > started this discussion confirms this: > > > > "The distinction between EUI-48 and MAC-48 identifiers is purely > > semantic: MAC-48 is used for network hardware; EUI-48 is used to > > identify other sorts of devices and software. (Thus, by > definition, > > an EUI-48 is not in fact a "MAC address", although it is > > syntactically indistinguishable from one and assigned from > the same > > numbering space.)" > > > > I will still plan to submit the new text as it clarifies > our use of > > these identifiers. > > On further thought, I will change the last paragraph of the Note to: > > This document purposely continues the use of 0xFF and 0xFE > because it meets > the requirements for IPv6 interface identifiers (i.e., that they > must be unique on > the link), IEEE EUI-48 and MAC-48 identifiers are syntactically > equivalent, > and that it doesn't cause any problems in practice. > > Let me know if anyone objects. > > Thanks, > Bob > > > > > -------------------------------------------------------------------- > IETF IPv6 working group mailing list > [email protected] > Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6 > -------------------------------------------------------------------- > -------------------------------------------------------------------- IETF IPv6 working group mailing list [email protected] Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
