In your previous mail you wrote: [EMAIL PROTECTED] writes: > I would be a bit careful to use IMEI as Interface Identifier. Hi Jonne, please let me assure you that I'm trying to be very careful in all this. If I speak out so frequently is just because I need to better understand how IPv6 and 3GPP/UMTS can be made to work together. If I'm diverging too much from the list's topic, please stop me. => the IMEI idea is terribly simple: GSM/UMTS terminals usually have no IEEE interface but have a globally unique ID, so use it exactly as we use IEEE IDs/MAC addresses.
> I am not really sure if this is something you want to tell the whole > world. Ok, privacy, yes. => please read the last update of RFC 3041 before to get things from 3041 which are not in it... Alberto mentioned that not necessarily the IMEI should be coded but a hash of it, periodically updated starting from a nonce. => I can't see a reason to do that when RFC 3041 is supported. Or do you mean we can replace the MAC address by the IMEI for the seed? > In addition, it might not always be unique... IMEI not being unique? That's bad, again. Then it's probably true that some id's are more unique than other id's. => IMEI is unique according to 3GPP/ETSI standards. In the true world I am afraid it is not far more unique than MAC addresses... So I try something else than IMEI: IMSI. As IMEI is for phones, IMSI is in the SIM cards. Is the IMSI private? Is it unique? => IMSI is *private* and unique. What are the other identifiers in the GSM/3GPP/UMTS? Phone number? => none, the hardware ID is the IMEI. Others (IMSI/phone number) are private... Would an IMT2000 identifier be better adapted, since it has a wider reach, more neutral. => it seems the IMT2000 identifier would be the IMEI. Regards [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] --------------------------------------------------------------------
