Robert Elz writes: > ps: don't we already have a way to tell from RAs which prefix is multi- > link > and which is not
No. In fact, I would expect that if any prefix is multilink, then all of them should be. > (because it matters to whether we send packets to routers > of just do ND for them?). There is a bit that says whether to send packets to routers or just do ND for them, which is probably what you're thinking of. However, a multilink subnet can work either way (see section 4.1 of the multilink draft), so that bit doesn't tell you anything about whether you're on a multilink subnet. > If so, we can use that to solve the DAD > optimisation problem can't we? That is, simply prohibit DAD optimisation > for multi-link prefixes. If we don't currently have such a method, there > are still spare bits in the RA that can easily be used to mark a prefix as > multi-subnet and hence ban DAD optimisation for it. My preference is that we just ban DAD optimization in all cases. -Dave -------------------------------------------------------------------- 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] --------------------------------------------------------------------
