RE: draft-ietf-ipv6-node-requirements-11.txt

Vishwas,

>I see a few more inconsistencies regarding the same RFC: 
>
>   Since ESP encryption and authentication are both optional, support
>   for the NULL encryption algorithm [RFC-2410] and the NULL
>   authentication algorithm [RFC-2406] MUST be provided to maintain
>   consistency with the way these services are negotiated.
>
>
>From RFC4301
>            - confidentiality-only (MAY be supported)
>            - integrity only (MUST be supported)
>            - confidentiality and integrity (MUST be supported)
>
>I think only encryption is now optional in RFC4301. We do not 
>necessarily need to allow NULL authentication either. Actually 
>this is still a problem with RFC4305 and it was not updated 
>because the issue was found late in the RFC process.

What was the issue found late with RFC4305?

John

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