&gt; And that roadmap references more than 150 other RFCs.<p>I count eight RFCs in the &quot;Core Functionality&quot; section. [0] I count ~26 RFCs in the &quot;Strongly Encouraged Enhancements&quot; section. [1]<p>The remaining referenced RFCs are:<p>* Experimental extensions to TCP<p>* <i>IANA</i> guidelines to follow when one is <i>extending</i> TCP<p>* Documents referenced <i>only</i> because of their historical significance<p>* Documents that provide implementation insights derived from TCP implementers&#x27; war stories over the years<p>Between eight and ~thirty-four RFCs is a damn sight smaller than &quot;more than 150&quot;.<p>[0] This section is stuff that <i>must</i> be implemented to speak TCP.<p>[1] That section is stuff that improves the performance and&#x2F;or security of TCP implementations, but is not required to interoperate with other TCP implementations.