| 摘要 |
A technique for preventing an MN (Mobile Node) having a plurality of interfaces from being caught in an infinite transfer loop includes, when each of the plurality of interfaces of the MN is connected to an HN (Home Network), in the MN, an abnormal transfer measures confirming unit grasps whether or not an HA (Home Agent) of each HN has an abnormal transfer measures function for avoiding an infinite transfer loop of infinitely repeating packet transfer in conjunction with another HA. Moreover, in the case of the absence of an HA which is not equipped with the abnormal transfer measures function, a registered control condition deciding unit determines an address registration whereby the MN itself avoids the infinite transfer loop, and a registration control unit derives an appropriate address pattern for the avoidance of the infinite transfer loop and carries out the address registration with respect to each HA.
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