Francis is correct. The motivation behind the draft was the observation that there are or have been (either currently being specified or proposed) several different special-purpose mechanisms for what amounts to optimized tunnels. Some of these turned out to have problematic issues, especially when mixed and matched with other things. Issues which would be much simpler to reason about and resolve if one had real tunnels instead of these special-purpose mechanisms. The argument for the special-purpose mechanisms has usually been that the duplicated addresses in the tunnel headers is wasteful. This draft attempts to eliminate that particular concern with a more straight-forward approach to the problem. Hopefully it will serve as a basis for discussion, as Francis suggests.
--Brian > -----Original Message----- > From: Pekka Savola [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, December 04, 2001 07:35 > To: Francis Dupont > Cc: Brian E Carpenter; Hesham Soliman (ERA); [EMAIL PROTECTED] > Subject: Re: I-D ACTION:draft-deering-ipv6-encap-addr-deletion-00.txt > > On Tue, 4 Dec 2001, Francis Dupont wrote: > > => I agree (this argument applies near each time where the > > bandwidth is critical) but I believe the purpose is not to > > save bandwidth but to replace special devices by a more > > general one: > > - replace one shot source routing by IPV6_NO_SRC > > - replace home address option by IPV6_NO_DEST > > There are already degenerated (i.e. optimizable) cases of > > tunnel in mobility, IPsec, ... To have a general mechanism > > is a good idea, at least as a basis for discussion. > > Exactly the point I was making. > > Saving bandwidth won't hurt, but that's definitely not the > reason to do it. > > -- > 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] --------------------------------------------------------------------
