> From: "Brian Zill" <[EMAIL PROTECTED]> > When this idea was suggested at the Interim Meeting, several people > expressed concern about needing to have a link-local address for every > interface identifier you might be using. A node may want to have a > large number of global addresses, for example, and the overhead of > requiring that it keep a corresponding link-local address for each might > be prohibitive. I think I'd prefer to just perfom DAD on all the global > addresses instead. It's the same amount of DADing going on, and you > don't need to keep all those link-local addresses around. My proposal, doing the DAD related comparison only with the ID part, solves the same problem, but lets you do single DAD / Id, regardless of the number of prefixes you combine with this id. And, you don't need to generate link-local address, if you are not using it. There was some concern about the backwards compatibility, but I *still* cannot see this introducing any more problems than what already exists legally by the current specification, where you can have hosts reserving ID for all combinations by DAD on link local, and hosts that don't do that. And, if you change specification, might as well change it to what I proposed :-). -- Markku Savela <[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] --------------------------------------------------------------------
