> > -----Original Message----- > From: Soliman Hesham [mailto:[EMAIL PROTECTED] > Sent: mercredi 17 mars 2004 09:38 > To: Pascal Thubert (pthubert); Jari Arkko > Cc: [EMAIL PROTECTED] > Subject: RE: Multiple DRs on a link > > > > => There are many different reasons. I sent a verly long > > email about this to nemo (monet back then). One simple > > scenario is that you might be walking around with a PAN > > that happens to have 2 MRs on a single link (e.g. a laptop > > and a mobile phone). The two MRs could share the same ingress > > link and have different egress links. For instance your laptop > > might have a WLAN card and your mobile might have a cellular > > interface. Once you walk into an airport lounge or starbucks > > you'll suddenly have a multihomed PAN. By definition, each MR > > must have a separate home prefix. So each will advertise > > a different prefix on the ingress side. > > > > Hi Hesham: > > > > I fail to understand the "by definition" here. Nemo does not > > prevent 2 > > different MRs from registering the same MNP. It's like > > multiple parallel > > routes. What's not duplicated is the Home address... In > > fact, I proposed > > a test to check that both registrations actually end up in a > > same link, > > otherwise there's a problem equivalent to the DAD problem in > > MIP6. Not > > much success on that proposal, though > > => Hmm, that's interesting. I must have missed that in the > spec. So, my concern is similar to yours, how does the HA > check whether the MRs are in the same place?? Seems like > a dangerous feature to have. I'm surprised this wasn't discussed > during LC. > Well, Nemo requires that some authorization be run, that's not described in the spec. Such a test could take place there, or the authorization could bar a second registration for a same prefix, I guess.
Pascal -------------------------------------------------------------------- IETF IPv6 working group mailing list [EMAIL PROTECTED] Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
