[BCP24]    Best Current Practice 24,
              <https://www.rfc-editor.org/info/bcp24>.
              At the time of writing, this BCP comprises the following:

              Berger, L., "RSVP over ATM Implementation Guidelines",
              BCP 24, RFC 2379, DOI 10.17487/RFC2379, August 1998,
              <https://www.rfc-editor.org/info/rfc2379>.