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Limitations/Concerns There is an ambiguity in the way to specify target SADB entry: Current scheme to specify target SADB entry based on src/dst address pair does not seem to be the best solution Delivery of PF_KEY MIGRATE message cannot be guaranteed: When a message is lost, there will be an inconsistency between Mobile IPv6 and IPsec database Some parts of the PF_KEY MIGRATE are implementation dependent: There is no standard way to make an access to SPD |