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4.4.1 004: Definition of requirement

All internal SA entries should have a status of whether the connection is up (keying material is available), down (keying material has expired), or is wanted (keying material not yet available). This is part one.

There is an additional situation in which the MAST device may need to be marked down. This is when it is known by the routing system that all routes to the outer destination will fail. This will typically only be true for systems without default routes (i.e. that are in a default-free zone). This second feature is part two.

Michael Richardson