idnits wants me to refer to RFC 2119

draft-dkg-dprive-demux-dns-http.md

@@ -36,6 +36,7 @@ informative:
 normative:
  RFC1035:
  RFC1945:
+ RFC2119:
  RFC2136:
  RFC5234:
  RFC7230:
@@ -95,6 +96,14 @@ excludes DNS over UDP or any other datagram transport).
 
 FIXME: address network stack ossification here?
 
+Terminology
+-----------
+
+The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
+"SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
+"OPTIONAL" in this document are to be interpreted as described in
+{{RFC2119}}.
+
 Distinguish only at the start of a stream
 =========================================