[Nsi-wg] new state machine

[Tomohiro Kudoh]

Hi all,

Here is a slide of a new state machine.

Here, prov.cf/rel.cf does not mean data plane failure, but means
confirmation of delivery of a prov/rel request to all the children.

I am not sure how we can handle prov.fl (and rel.fl) messages. Since
they are not related to data plane, they are almost fatal. Going back
to the previous state may not make sense. (In most cases, such .fl
message will not be sent back, but time out will happen).

Tomohiro
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