[STD7]     Internet Standard 7,
              <https://www.rfc-editor.org/info/std7>.
              At the time of writing, this STD comprises the following:

              Eddy, W., Ed., "Transmission Control Protocol (TCP)",
              STD 7, RFC 9293, DOI 10.17487/RFC9293, August 2022,
              <https://www.rfc-editor.org/info/rfc9293>.