div class="header-wrapper"><h2 id="b-references"><bdi class="secno">B. </bdi>References</h2><a class="self-link" href="#references" aria-label="Permalink for Appendix B."></a></div><section id="normative-references"><div class="header-wrapper"><h3 id="b-1-normative-references"><bdi class="secno">B.1 </bdi>Normative references</h3><a class="self-link" href="#normative-references" aria-label="Permalink for Appendix B.1"></a></div>

      <dl class="bibliography"><dt id="bib-rfc2119">[RFC2119]</dt><dd>
       