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

2009-04-22 11:45:53
Lars,

- Conflicts between configuration parameters.

- Issues with address selection.

I agree that both of these are important and should be worked on (and with the rest of your email, basically).

The first one is what I thought MIF would be focusing on, as an INT WG is IMO the right venue for this.

The second one is also important, but much more tricky, because it ties in with transports and applications (as Keith and others have pointed out already). Topics that cross area boundaries are always a bit difficult to charter. I'm at this point not fully convinced that simply throwing this in with topic #1 into one WG is going to work.

First, a minor point: I think everyone is mindful about the fact that address selection is a problem that affects apps, transports, and IP layer. However, I'll note that address selection has been an Internet area topic for some time (RFC 3484, 6MAN work, etc).

But my main point is that the MIF charter covers -- on purpose -- a relatively large problem area. We need to describe the problem as experienced by real-life implementations without constraining ourselves too much at this stage. Once we finally understand the problem fully, then it is a time to start narrowing down the scope to something implementable. However, we are not there yet. The WG needs to complete its problem definition task first. When it does, it may be that we no longer need a specific WG and the rest can be handled in, say, DHC -- if the chosen scope is just parameters conflicts, for instance.

I would also echo what Margaret said about this discussion being excellent input for the problem definition work. From my point of view I'd like to get the group chartered so that they can do that work, as opposed to us writing the full problem definition into the charter. The latter would consume quite a bit of IETF discussion list and AD cycles :-)

Jari

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