@djm agreed & there's https://datatracker.ietf.org/doc/html/rfc9413 :)
looking back, unfortunately formal methods work does not always pick up to ietf - e.g. our work on tcp/ip and the sockets api didn't get much resonance in the engineering community http://www.cl.cam.ac.uk/~pes20/Netsem/paper3.pdf
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