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Re: lengths of some specifiers
Stephen Kent wrote:
>
> Scott,
>
> The protocol ID size for IPsec was determined by the size of the
> next protocol field in IP, i.e., 8 bits. We had long discussions about the
> SPI size on the list several years ago and decided to go with 32 bits to
> allow allocation of multicast SPIs in a separate part of the space, without
> trying to be bit-wise and alignment-foolish. Given the current fondness
> for 32-bit and 64-bit aligned data structures, the SPI size also makes
> sense.
>
> Steve
I don't know if you're responding to my whole stream-of-consciousness
posting (3 posts, I promise I won't do it again) or just the one post,
but it looks like all of them. So, let me see if I understand correctly
in that light: the SA attributes are given 2 octets for alignment, while
the proto ID's were given 1 octet for IPv4 consistency?
Scott
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