In the software-defined network based proxy mobile IPv6 environment, in accordance with one embodiment of the invention the open flow controller that supports a handover of the mobile node includes a processor for performing the storage and the handover policies the handover policy stored. In this case, the processor first mobile access gateway associated with the state of determining a handover of the mobile node and selecting a second mobile access gateway to the handover target, and the data packet the local mobility anchor associated with the open flow controller according to the handover policy the method as transmitted to the mobile node, a first mobile access first mobile connected to pass through a second mobile access gateway instead of the gateway, the gateway, and the second mobile access gateway, and sending the message according to the handover policy to the local mobility anchor, respectively do.