Alain, et al,

we have been at an impasse, so thank you very much for proposing a path forward.

> 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.

I do agree with that. the Venn diagram for the three solutions would look 
awfully similar to a single circle. ;-)
there are some use cases though, that can only be fulfilled with one mode of 
transport versus the other.
I left the interim meeting in Beijing having been convinced that there are use 
cases requiring both encapsulation and requiring translation. if we for a 
moment accept that, I would suggest that we treat MAP as one single solution. 
it will have two options/flavours of transport.

> 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.

with the above proposal, we can drop question 3.

> 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.

can ask the chairs to take a hum of how many would want t-shirts for the 
meeting with: "Just pick one for F's sake and stop arguing". ;-)

cheers,
Ole
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