Dan Wing allegedly wrote on 03 22 2009 10:09 AM: >>> When one of these NATs goes down, active connections will be >>> lost, but IGP routing will switch users automatically to a >>> different NAT when they retry. >> >> If you allow your hosts to use multiple connection points into the >> Internet, and external routing changes so that the packets they >> send go out different connection points, their apparent source >> address can change. One of the requirements for effective use of >> NAT and multihoming is that your hosts' peers need to handle this >> (via Multipath, HIP, MIP, SCTP or whatever). That is, you can't >> allow your hosts to use multiple connection points until everyone >> _else_ they talk to has been upgraded. How will you know when that >> is? > > A host knows if it is using HIP, MIP, or SCTP to communicate with > another host. I was asking how the site knows when its hosts peers have been upgraded, so that it can allow their traffic to be routed out multiple interfaces. > FYI, there is also a new idea for Mobile DTLS which > provides similar address mobility, draft-barrett-mobile-dtls-00.txt. Yes but that should be a different thread. Scott _______________________________________________ Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf