Randall,
RRSh> Now of course if the application wants to be aware, it can "subscribe to RRSh> events" that let it know that it happened.
That sounds remarkably like a "presence" service.
No, what it is is a socket call you make that "subscribes" do address events on the socket. Thus when a peer adds and deletes an address you get a "notification" message up the socket buffer telling you that an address was added and one was deleted.
Take a look at the current SCTP sockets document... or for that matter you can play with the KAME SCTP stack and write some code, bring up an association and then do some ifconfig's ...
R
d/ -- Dave Crocker <dcrocker-at-brandenburg-dot-com> Brandenburg InternetWorking <www.brandenburg.com> Sunnyvale, CA USA <tel:+1.408.246.8253>
-- Randall R. Stewart randall@stewart.chicago.il.us 815-342-5222 (cell phone)