[BCP145]   Best Current Practice 145,
              <https://www.rfc-editor.org/info/bcp145>.
              At the time of writing, this BCP comprises the following:

              Eggert, L., Fairhurst, G., and G. Shepherd, "UDP Usage
              Guidelines", BCP 145, RFC 8085, DOI 10.17487/RFC8085,
              March 2017, <https://www.rfc-editor.org/info/rfc8085>.