Re: Stephen Farrell's Discuss on draft-ietf-dmm-hnprenum-06: (with DISCUSS and COMMENT)

Stephen Farrell <[email protected]> Thu, 2 Mar 2017 16:46:38 +0000

Newsgroups	gmane.ietf.nemo
Message-ID	<cf8b7bf2-eba1-5928-1669-dea83434c60c__40595.0677268722$1488473213$gmane$org@cs.tcd.ie>

Excellent thanks for confirming. I'll clear the discuss
and leave it to you/Suresh to add the pointer or whatever,

Thanks,
S.

On 02/03/17 16:43, Sri Gundavelli (sgundave) wrote:
> 
> The trigger for Prefix Renumbering is through the use of RFC7077 UPN/UPA
> message with the Notification Reason code of 2 (defined in RFC7077).
> Technically, the spec is not defining any new messages, or mobility
> options; its just using what is defined in RFC7077 and with a new behavior
> on the protocol peer. This automatically enforces RFC5213/RFC7077 security
> considerations and I do not see a way around. But, for highlighting those
> rules, either duplicating the text from 5213/7077, or pointing to those
> sections is fine.
> 
> 
> Sri
> 
> 
> 
> 
> On 3/2/17, 7:02 AM, "Suresh Krishnan" <[email protected]> wrote:
> 
>> Hi Stephen,
>>
>>> On Feb 28, 2017, at 4:47 AM, Stephen Farrell
>>> <[email protected]> wrote:
>>>
>>> Stephen Farrell has entered the following ballot position for
>>> draft-ietf-dmm-hnprenum-06: Discuss
>>>
>>> When responding, please keep the subject line intact and reply to all
>>> email addresses included in the To and CC lines. (Feel free to cut this
>>> introductory paragraph, however.)
>>>
>>>
>>> Please refer to 
>>> https://www.ietf.org/iesg/statement/discuss-criteria.html
>>> for more information about IESG DISCUSS and COMMENT positions.
>>>
>>>
>>> The document, along with other ballot positions, can be found here:
>>> https://datatracker.ietf.org/doc/draft-ietf-dmm-hnprenum/
>>>
>>>
>>>
>>> ----------------------------------------------------------------------
>>> DISCUSS:
>>> ----------------------------------------------------------------------
>>>
>>>
>>> I think this should be an easy one to resolve:
>>>
>>> Section 7 says: "The protection of UPN and UPA
>>> messages in this document follows [RFC5213] and
>>> [RFC7077]." I'm not clear if "follows" means the same
>>> as "MUST be protected using end-to-end security
>>> association(s) offering integrity and data origin
>>> authentication" (RFC5213, section 4). I think it ought
>>> really, as otherwise this could subvert the security
>>> of PMIPv6. So wouldn't it make sense to be explicit
>>> that these new messages have the same MUST
>>> requirements as binding updates. Doing that by
>>> repeating the quoted text from 5213 would be a fine
>>> way to do that, but there may be better options.
>>
>> I had already read the text as requiring the same requirements as PBUs. I
>> do not have any objections to adding further clarity. Authors, any
>> opinions?
>>
>> Thanks
>> Suresh
>

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