Re: [IPsec] I-D Action:draft-ietf-ipsecme-ikev2bis-04.txt

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ikev2bis draft-04 section 1.5 adds about INVALID_MAJOR_VERSION:

   There are two cases when such a one-way notification is sent:
   INVALID_IKE_SPI and INVALID_SPI.  These notifications are sent
   outside of an IKE SA.  Note that such notifications are explicitly
   not Informational exchanges; these are one-way messages that must not
   be responded to.  (INVALID_MAJOR_VERSION is also a one-way message
   which is sent outside of an IKE SA, although it is sent as a response
   to the incoming IKE SA creation.)

I feel it confusing.  Probably "such a one-way notification" should be
"a one-way notification".  I don't understand why
INVALID_MAJOR_VERSION case need to be separated from INVALID_IKE_SPI
and INVALID_SPI.

The word "notification message" seems somewhat ambiguous and
confusing.  In section 3.10, it refers to a Notification payload
rather than an entire message.  In some other places I suppose it
means an INFORMATIONAL exchange request message.

Come to think of it, I note there are two expressions in the draft:
"Notify payload" and "Notification payload".  Also in most places
"INFORMATIONAL exchange" whereas there are some "Informational
exchange" and "informational exchange".


					FUKUMOTO Atsushi
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