Dear WG members,

I didn't had time to read the last version of 4rd-U but I read carefully -03 
when it was published. 

I really appreciated the work done by Rémi to write down -03. The document is 
well written, easy to read and the requirements are clearly sketched. I really 
think this spirit should be adopted by MAP documents.

As I already told Rémi, I would like if all proponents of stateless A+P 
converge and avoid wasting energies in comparing individual proposals. I 
thought this is what has been agreed during the softwire interim meeting: IMO, 
MAP effort meets the objective of group work.

Some of the points raised by Rémi can be easily considered in the context of 
MAP; except the idea of unified header which is a step forward. Adopt a unified 
approach is exclusive to encapsulation and/or translation. 

The question now is: Does the unified approach bring new features + 
simplification compared to the normal IPv4-in-IPv6 encapsulation scheme (which 
I'm mainly interested in)? The answer is: No. 

Perhaps this is selfish but given what I mentioned above, I vote for the 
following:

* Adopt the work of the MAP design team as the base specification for stateless 
A+P effort.

* Make sure proposals from Rémi (except U) are discussed: e.g., Checksum 
neutrality
(1) Share the archives of MAP Design Team discussion
(2) Use IETF Issue Tracker to record the issues and the consensus/conclusion
(3) Adopt a clear procedure within the Design Team to make decisions when there 
are conflicts

* Reduce the amount of MAP documents: IMHO, three documents are needed
(1) MAP Address Format
(2) MAP Overall Architecture and Design Recommendations
(3) MAP DHCPv6 Options

Cheers,
Med 

>-----Message d'origine-----
>De : softwires-boun...@ietf.org 
>[mailto:softwires-boun...@ietf.org] De la part de Alain Durand
>Envoyé : mardi 20 mars 2012 00:39
>À : Softwires WG
>Cc : Yong Cui; Ralph Droms
>Objet : [Softwires] Path to move forward with 4rd.
>
>Dear wg,
>
>After a number of discussions with my co-chair, our AD and 
>various authors, here is how we would like to move forward wrt 4rd.
>
>1) There  is an observation that all the solutions on the 
>table E, T & U actually solve the stateless  problem we started with.
>    There are differences, but it is unclear if those 
>differences are really significant. E and T are the original 
>Encapsulation and Translation
>    proposals, U is an hybrid unifying solution.
>
>2) We have already agreed back in Beijing that we would 
>publish all necessary documents. The issue here is the 'label' 
>or 'status' those
>    documents have at IETF. In particular, do we want to 
>publish them as Experimental, Informational or Standard Track.
>
>We are at the point now where we need to make progress. In 
>Paris, we would like to ask for presentations from the 
>proponents of each candidate solution (E, T & U).
>Each presentation should cover an overview of the proposed 
>solution, explain how it compares to the others and make a 
>case as why it should be the one on the Standard Track. We 
>will allocate 20 minutes for each presentation.
>
>Then, we, chairs, would like to ask a series of questions to 
>the working group. In order to make this process transparent, 
>here is the list of questions we want to ask
>and their sequence.
>
>Q1: Without pre-supposing which one will be selected, do you 
>agree to publish 1 of the 3 proposals on the Standard Track 
>and publish the other(s) as Informational if still asked to?
>
>If the answer is NO, then the process stops and we will 
>publish everything as Experimental and come back in 12-24 
>months to see what gets adopted by the market.
>If the answer is YES, we move to the next question.
>
>
>Q2: Do you believe that the WG should publish U as the one 
>Standards Track document?
>
>If the answer is YES, the process stop, we put U on the 
>Standard Track and publish E & T as Informational.
>If the answer is NO, we are left with E & T (U then might be 
>abandoned or published as Historical/Informational)
>
>
>Q3: Which of E and T do you want to see moving on the standard 
>track (you can only express support for one)?
>
>If there is a clear outcome from this question, we would 
>publish that proposal on the Standard Track and the other one 
>as Informational.
>If there is no clear consensus on this question, we will 
>publish both E & T as Experimental.
>
>In the meantime, we would like to encourage discussion on the 
>mailing list to foster our common understanding of the various 
>technologies and how they relate to each other.
>
>  Alain & Yong, wg co-chairs.
>_______________________________________________
>Softwires mailing list
>Softwires@ietf.org
>https://www.ietf.org/mailman/listinfo/softwires
>
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