[BCP233]   Best Current Practice 233,
              <https://www.rfc-editor.org/info/bcp233>.
              At the time of writing, this BCP comprises the following:

              Allman, M., "Requirements for Time-Based Loss Detection",
              BCP 233, RFC 8961, DOI 10.17487/RFC8961, November 2020,
              <https://www.rfc-editor.org/info/rfc8961>.