Tim, That sounds more like a call to update the spec than to ignore the additional functionality available with variable length prefixes.
Best Regards, Jeffrey Dunn Info Systems Eng., Lead MITRE Corporation. (301) 448-6965 (mobile) -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tim Chown Sent: Wednesday, October 01, 2008 10:48 AM To: [email protected] Subject: Re: the IPv6 Ethernet lost bits - fffe On Wed, Oct 01, 2008 at 04:36:57PM +0200, Jeroen Massar wrote: > Alexandru Petrescu wrote: > > For what it's worth, > > > > Whenever statelessly auto-configuring an IPv6 address on Ethernet the > > 10th and 11th bytes are always 'fffe', hardcoded. These are lost bits. > > The world has more devices than Ethernet. The Ethernet MAC -> EUI-64 > trick (thus your lost fffe bits) is just a trick. Take firewire for > example which uses full EUI-64. Well, Vista uses 'random' host addresses, 64-bit ones. If the spec had been different way back when, these could equally have been 32 or 48 bits instead. But it wasn't. -- Tim -------------------------------------------------------------------- IETF IPv6 working group mailing list [email protected] Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 -------------------------------------------------------------------- -------------------------------------------------------------------- IETF IPv6 working group mailing list [email protected] Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
