A mobile terminal, a network node, and {TAIL ~ a packet transfer management node} according to the present invention provide such effects that a race condition between {HEAD ~ a PMIPv6} binding by a PBU message of PMIPv6 and a CMIPv6 binding by a BU message of CMIPv6 can be resolved 
A mobile terminal , a network node , and { TAIL ~ a packet transfer management node } according to the present invention provide such effects that a race condition between { HEAD ~ a PMIPv6 } binding by a PBU message of PMIPv6 and a CMIPv6 binding by a BU message of CMIPv6 can be resolved
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