I agree with Brian that there are issues with DNS & configured databases, but the event frequency of this is generally low enough I would consider it worth the risk. The problem I do have with it is the lack of aggregation in the IGP that would result. While flat routing is not a problem for a small network, it wouldn't work when the network reached any significant size.
>From my perspective, there is room here to support an automated set as well as an aggregatable set. If we took one /16 from the fec/10, say feff, and used the next 48 bits from the router EUI to create the /64, there would be no management required, but the networks that wanted explicit control could filter that /16 in the IGP, and still have plenty of SL space to manage as aggregates. How that works after the EUI-48's run out is a different question... Tony > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]] On Behalf Of Bob Hinden > Sent: Sunday, December 01, 2002 9:47 AM > To: Aidan Williams > Cc: [EMAIL PROTECTED] > Subject: Re: EUI-48 globally unique site-locals (GUSL) > > > Aidan, > > >For each link, a router may automatically assign a > site-local address > >from an EUI-48 (ie a MAC address) using the following address format: > > > > | 12 bits | 48 bits | 4 bits | 64 bits | > > +---------+------------------+----------+----------------------+ > > | fef | router device ID | sub ID | machine interface ID | > > +---------+------------------+----------+----------------------+ > > Figure 1: Address Format: fef0::/12 > > BTW, two bits in an EUI-48 (i.e., the g and u bits) are not > needed if using > this as a global token, so it could be easily compressed to > 46 bits leaving > two more bits for the subnet. > > I am not sure this helps very much with the other problems raised. > > Bob > > -------------------------------------------------------------------- > IETF IPng Working Group Mailing List > IPng Home Page: http://playground.sun.com/ipng > FTP archive: ftp://playground.sun.com/pub/ipng > Direct all administrative requests to [EMAIL PROTECTED] > -------------------------------------------------------------------- > -------------------------------------------------------------------- IETF IPng Working Group Mailing List IPng Home Page: http://playground.sun.com/ipng FTP archive: ftp://playground.sun.com/pub/ipng Direct all administrative requests to [EMAIL PROTECTED] --------------------------------------------------------------------
