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

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

From: Yoav Nir <ynir_at_nospam>
Date: Fri Sep 25 2009 - 08:52:01 GMT
To: Paul Hoffman <paul.hoffman@vpnc.org>


On Sep 24, 2009, at 9:44 PM, Paul Hoffman wrote:

> 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.

Or maybe "extra 32 reserved bits" so that everyone can extend ESP :-)



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