Well, sourceforge/geocrawler still do not seem to be archiving our lists, so I posted an overview of what we seem to be currently thinking in the list discussions. We decided we are going to go with the SCTP socket style interface, and we will introduce the extended calls sctp_bindx and sctp_peeloff, instead of trying to butcher bind to accept multiple endpoints.
I think I have managed to put together a pretty good team of people for this, and once we are done with finals we should get a chance to work on this seriously. I still would like to get someone who is a bit more familiar with IPsec than I am involved with this, but that can honestly wait until we have something working. I am pretty sure I know where the hooks need to go, I am just worried about the subtleties.