Last time I read the T/TCP document, it looked like a broken protocol
w.r.t. timestamps & PAWS. But I digress... (I could have been paranoid
that day).
Linux contains a comment to the effect that KA9Q sends out data with the
initial return SYN+ACK, though we ignore it. Both those behaviours look
legal according to my reading of RFC793. And it suggests a FIN could be
tacked on the end of such a packet, maybe?
If so, SYN+ACK+FIN is legal, but not SYN+FIN.
-- Jamie
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