IP/Reliable Datagram Protocal for 4.2?

[Mark Horton]

I looked at RDP (RFC908) hoping it was the long awaited reliable datagram
protocol, but alas it's something different.  This RDP seems aimed at
downloading programs, although it is also well suited to transferring
digitized images over a network.  It has less overhead than TCP, but far
more than a datagram protocol.  In particular, connection setup/teardown
seem to be necessary for RDP.