> It seems easier to try to back-port SCTP's multihoming features to TCP > somehow than to deploy an entirely new transport protocol. It's > unfortunate this wasn't addressed at the time IPng was being designed.
this was tried. there was almost going to be a "TCP6" which was capable of signalling an endpoint-renumber event using in-band control messages. alas, this approach was deemed overly complex, so TCP went unchanged. -- Paul Vixie
