Patent ID: 8103278

Claim:
A method for controlling a first interface and a second interface installed on a mobile node, wherein the mobile node communicates with a first access network (AN) through the first interface and communicates with a second AN through the second interface, comprising: acquiring a first IP address through the first interface and the first AN for accessing a service network (SN); acquiring a second IP address through the second interface and the second AN for accessing the SN; selecting the first interface as an awake interface; directing a second bridging node to create and cache binding information indicating a binding of the second IP address to the first IP address; turning off the second interface after the binding information is successfully created and cached on the second bridging node; receiving a packet via the first interface; de-tunneling the received packet and discovering that the received packet is originally transmitted to the second interface; turning on the second interface; and directing the second bridging node to erase the cached binding information via the second interface.