I'm happy whenever anyone brings up SCTP. Such a maligned protocol. Congestion control and QoS, however, are a loser's game. If you're running into realistic issues meeting demand due to statistical multiplexing breaking down to the point you must rely on caring about the internal state of traffic streams, you should have thrown more link hardware at the problem long ago. Many dumb pipes > fewer smarter pipes.

>NAT

Oh, didn't you know, IPv6 was going to solve everything. No more NAT. We're just going to assign everyone an IP at birth so people can continue to ignore the User-Agent/User distinction.