> >> I've got some other problems with the document also - specifically > >> the idea that link-local addresses are preferable to global addresses. > > > Please let me confirm: are you referring to Rule 2 of source address > > selection? > > Perhaps you are talking about Rule 8 of destination address selection: > > Rule 8: Prefer smaller scope. > If Scope(DA) < Scope(DB), then prefer DA. Similarly, if Scope(DA) > > Scope(DB), then prefer DB. > > This rule may be sometimes controversial, but I personally think it is > reasonable, because we can (in theory) expect better reachability for > a smaller scope of destinations. This is especially true for a > link-local destination where we don't need L3 routing.
Rule #2 is not a problem, rule #8 is. The problem is that the address selected for one connection pair may end up getting reused in other scope. So if rule 8 results in an LL or SL address being used, there might be an attempt to reuse that address (perhaps by another application component) in a different scope. There really should be a rule to the effect "avoid scoped addresses if at all possible". Keith -------------------------------------------------------------------- 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] --------------------------------------------------------------------
