So what I am suggesting is that it seems that there is evidence that one
can do an "association" protocol that is relatively lightweight in terms
of machinery, packets, packet headers, and end-node state if one leaves
the heavy lifting of reliability to the underlying TCP protocol.
the on-the-wire protocol overhead is not that great. the computational
overhead to the host and application, and the resulting loss in maximum
bandwidth, are fairly expensive.
basically it's a lot more efficient to do some variant of mobile IP.
Keith