[BCP184]   Best Current Practice 184,
              <https://www.rfc-editor.org/info/bcp184>.
              At the time of writing, this BCP comprises the following:

              Trammell, B. and B. Claise, "Guidelines for Authors and
              Reviewers of IP Flow Information Export (IPFIX)
              Information Elements", BCP 184, RFC 7013,
              DOI 10.17487/RFC7013, September 2013,
              <https://www.rfc-editor.org/info/rfc7013>.