Pekka,

I agree with Joe and Tony. Tunnels are a tool for virtualizing the address
space. If you are going to propose that they are a flawed tool, then I think
you need to propose an alternative that has "better" (for some sense of the
word)  properties. The only alternative I can think of (swapping IP
addresses in the header, i.e. NAT) is worse,  but maybe there are other
alternatives.

            jak



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