Harald, > My understanding (seen from a VERY long distance) is that the routing > scaling problems are substantially the same for both dialects > of IP,
Correct.
> and that initial efforts have focused on encapsulating either,
> with the initial experiments using IPv4 as the encapsulating
> protocol.
>
> Is this understanding correct?
Close. First, no formal experiments have been defined in
the WG context (to the best of my knowledge).
Next, we have 4-to-4-over-6 (464), 6-to-6-over-4 (646),
4-to-4-over-4 (444) and 6-to-6-over-6 spec'ed and running
in the field, so any combination of those is available for
experimentation. Of course, any X6X (for X = 4 or 6)
requires a 6 path between xTRs.
Dave
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