Security review of
	  PIM Message Type Space Extension and Reserved Bits
		     draft-ietf-pim-rfc8736bis-01

Do not be alarmed.  I generated this review of this document as part
of the security directorate's ongoing effort to review all IETF
documents being processed by the IESG.  These comments were written
with the intent of improving security requirements and considerations
in IETF drafts.  Comments not addressed in last call may be included
in AD reviews during the IESG review.  Document editors and WG chairs
should treat these comments just like any other last call comments.


   "The PIM version 2 messages share a common message header format.  The
   common header definition contains eight reserved bits.  This document
   specifies how these bits may be used by individual message types and
   extends the PIM type space."

Other than slightly complicating the parsing of message types, this 
change seems to have no security implications.   

Hilarie

-- 
kivinen@iki.fi