> > > > => The IID part for link-local addresses is essentially > > a random number. > > Ok, this is what I really was after. Whether it could be > generated from > some contract number, or whatever. > > >There is nothing in 3GPP that specifies > > how it should be generated.In fact, depending on how you > > implement the GGSN, you could use the same IID for > > all decives because each link is p2p and each device > > has a separate prefix. > > Do the nodes also adapt that IID (unless they use RFC3041) for the > global/site-local address?
=> It is up to the nodes. Since a /64 is assigned, default routers only look at that /64 to identify a node. > > >So, maybe we can add something > > to say that hosts are encouraged to use 3041. > > 3041 isn't really all that beneficial if IID part is > already quite random > (and is changing from time to time, e.g. in the scope of a > day or week). => Agreed, but unfortunately it is left up to implementations, so hosts can't really rely on the GGSN to do that. So RFC 3041 might come handy after all. Actually, as a side node, I think 2462 should be deprecated and replaced by 3041....please don't shoot! > >But > > there is no globally unique token in the IID that will make > > a 'device or user' trackable. > > What about draft-dupont-ipv6-imei-00.txt? (The beef of the > draft seems to > be the "universal" part, but I'm curious about IMEI here.) => I guess my statement above would tell you that I'm not a fan of globally unique iids :) So a way of generating an iid on each link layer is unnecessary IMHO. I hope the u bit will go away soon too. Hesham > > -- > Pekka Savola "Tell me of difficulties surmounted, > Netcore Oy not those you stumble over and fall" > Systems. Networks. Security. -- Robert Jordan: A Crown of Swords > > > > -------------------------------------------------------------------- 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] --------------------------------------------------------------------
