On Jul 18, 2009, at 7:23 AM, Joel M. Halpern wrote:

I think that this is at least misleading.
From a pure routing architecture perspective, the statement that IPv6 started with (thou shalt always use provider address) is sufficient. However, once we acknowledge that issues like renumbering and the realities of building networks are relevant, we have to look beyond just our playpen and pay attention to adjacent activities and our affects on them. Similarly, when evaluating map-and-encaps ideas, we should be aware of the interaction of those ideas and other activities like multi-path TCP, even though multi-TCP is clearly not "routing".

Joel, I fully agree with the above statements (except the one about misleading:)

e.g. taking multipath-tcp as an example: I thought this is covered under my 3rd statement below:

   We need to have a good understanding about the interplay
   between addresses and identifiers

If we claim to have solved something with too small a focus, we won't have anything usable.

agree.


Yours,
Joel

Lixia Zhang wrote:
...
But I would like to step up a level and repeat what I said earlier:
1/ I do not think it is in our charter to define how many identifiers we ought to have, or what they ought to be.
2/ Our job is to figureout scalable routing architecture.
3/ We need to have a good understanding about the interplay between addresses and identifiers, no less and also no more.
...

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