Re: [mif] WG Review: Multiple InterFaces (mif)

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At 7:29 AM -0700 4/22/09, Margaret Wasserman wrote:
>
>(1) As I pointed out in my previous message to Christian, address
>selection is not (today) a transport-layer or application-layer function
>in most cases.  Given that this is currently an Internet-layer function,
>I think it makes sense to analyze the issues with address selection (as
>part of the whole address/interface/router selection process)  in an
>Internet Area group.  If we find that one of the problems we have is
>that the Internet layer doesn't have the right information to make these
>decisions, then possibly some follow-on work might need to be chartered
>elsewhere.

So this may be simply one of those cases where address selection
does not fit your model, but at what layer would you describe the ICE
spec as working?  Clearly, one aim in ICE is to provide a signalling-path
mechanism for flow endpoint selection, which certainly relates to the question
of address/interface selection.

There is an old saw that my work is a cross-layer optimization; yours is
a layer violation, and that guy's is a hideous hack.  However we have arrived
here, it seems at least reasonable to say that we currently have this
work muddled across a variety of layers.  If we can focus it and solve it
at a single layer, the architecture gets easier and the protocol smog
clear a bit.  But I seem to be hearing that tackling the big problem is
ocean-boiling; what I am not clear on is whether the end result of piece work
shifts the pain or actually reduces the smog.

Perhaps it is just me; this is not stuff I am following in any depth.  But the
impression I'm getting from following the thread is that there is some
disagreement about how to structure the work to make sure it really
does reduce pain, rather than just shift it around.

			regards,
				Ted
				Ted
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