If you don't put it in the RFC then you'll end up with five different solutions to this problem from five different vendors, and a nice 5x5 matrix of new hilari

If you don't put it in the RFC then you'll end up with five different solutions to this problem from five different vendors, and a nice 5x5 matrix of new hilarious edge cases when these are talking to each other and something wonky is happening to the TCP session.