Section 9.14 RTP Header extensions

[aboba]

RFC 6051 is not included in the list of header extensions, although it is mentioned in RTP-Usage Section 5.2.1:

5.2.1. Rapid Synchronisation

Many RTP sessions require synchronisation between audio, video, and
other content. This synchronisation is performed by receivers, using
information contained in RTCP SR packets, as described in the RTP
specification [RFC3550]. This basic mechanism can be slow, however,
so it is RECOMMENDED that the rapid RTP synchronisation extensions
described in [RFC6051] be implemented in addition to RTCP SR-based
synchronisation. The rapid synchronisation extensions use the
general RTP header extension mechanism [RFC5285], which requires
signalling, but are otherwise backwards compatible.

[aboba]

Proposed resolution is to add RFC 6051 to the list of extensions.

Question: RFC 5450 isn't mentioned in RTP usage. Should this be in there?