Hi Hesham,
Thanks for the quick response. >=> Then let's begin the discussions. The only reason >for standardising the draft in the IPv6 WG was to make >sure that we're doing the right thing. Otherwise an >informational RFC wouldn't have to go through the >IPv6 WG or could have been replaced by a 3GPP spec. >But since the competence is here, it is crucial >that we get feedback. That sounds good. Let's begin the discussions... I'll send separate threads for each issue. > > It is not my impression that the WG has reached consensus on some > > of the issues raised in this document, specifically: > > > > - Forbidding the use of DAD on some links > >=> DAD is not needed if address duplication is not >possible. Since each terminal gets a unique >/64 (as per the advice draft), and since all terminals >are on p2p links, DAD would be a waste of BW. >But please have a closer look and let us know >if something was missed. Address duplication is possible on point-to-point links, because one end may choose an address that is already in use by the other end. I don't think that this is very likely, but it is possible. However, making DAD optional (and advising against the use of DAD) on point-to-point links, is in direct conflict with RFC 2462, which says: "Duplicate Address Detection MUST take place on all unicast addresses, regardless of whether they are obtained through stateful, stateless or manual configuration..." I don't think that we should publish an informational document that advises some implementors to do something that specifically disagrees with a MUST requirement in a standards-track document. If the standards-track document is broken, we need to fix it instead. [Please note that I actually think that we should be able to disable DAD for some link types. I made a proposal to that effect several years ago, but my arguments didn't win the day.] Margaret -------------------------------------------------------------------- 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] --------------------------------------------------------------------
