remove normative language from port usage sentence

fixes #195
quicwg · Feb 8, 2021 · f6a48f4 · f6a48f4
1 parent 3ded00f
commit f6a48f4
Showing 1 changed file with 5 additions and 5 deletions.
diff --git a/draft-ietf-quic-applicability.md b/draft-ietf-quic-applicability.md
@@ -458,11 +458,11 @@ assignments, and NATs.
 
 As QUIC is a general purpose transport protocol, there are no requirements that
 servers use a particular UDP port for QUIC. For applications with a fallback to
-TCP that do not already have an alternate mapping to UDP, the registration (if
-necessary) and use of the UDP port number corresponding to the TCP port already
-registered for the application is RECOMMENDED. For example, the default port
-for HTTP/3 {{QUIC-HTTP}} is UDP port 443, analogous to HTTP/1.1 or HTTP/2 over
-TLS over TCP.
+TCP that do not already have an alternate mapping to UDP, usually the
+registration (if necessary) and use of the UDP port number corresponding to the
+TCP port already registered for the application is approrpiate. For example,
+the default port for HTTP/3 {{QUIC-HTTP}} is UDP port 443, analogous to HTTP/1.1
+or HTTP/2 over TLS over TCP.
 
 Applications could define an alternate endpoint discovery mechanism to allow
 the usage of ports other than the default. For example, HTTP/3 ({{QUIC-HTTP}}