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Re: [IPsec] WESP #109 - WESP header alignment for IPv6

From: Paul Hoffman <paul.hoffman_at_nospam>
Date: Thu Sep 24 2009 - 18:44:02 GMT
To: "Grewal, Ken" <ken.grewal@intel.com>, "ipsec@ietf.org" <ipsec@ietf.org>

At 12:13 PM -0600 9/24/09, Grewal, Ken wrote:
>Proposed change
>0 1 2 3
>0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
>+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>| Next Header | HdrLen | TrailerLen |V|V|E|X| Rsvd |
>+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>| Reserved (zeros) for IPv6 alignment |
>+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

No hat:

I agree with the idea, but I would word it a bit differently. It's not "reserved", it is actually used. "IPv6Padding (4 octets)" might make it clearer.

--Paul Hoffman, Director
--VPN Consortium

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