I see:

   8. Security Considerations 
    
   There are no specific security issues for this mechanism, beyond 
   those already applicable to SIP-based session signaling. [TBD]

   9.   IANA Considerations 
    
   This document makes no request of IANA. 

And yet there are significant security considerations.  E.g.:

   The reason for specifying the mechanism, and its length, is to make
   it impossible to determine the manufacturer of the device which
   generated it by looking at its format or value.

And of course the entire *purpose* of the draft is to define a
standardized header, which is an IANA consideration.

Dale
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