Patent ID: 7995571

Claim:
A method of setting an address of at least one tunnel router providing a tunneling function in a user node, the method comprising: transmitting, by and originating from the user node, a first message requesting at least one tunnel router address corresponding to the at least one tunnel router to a tunnel service support server; receiving, by the user node, a second message including at least one tunnel router address from the tunnel service support server; and storing the tunnel router address included in the received second message, wherein packets to be tunneled to the at least one tunnel router originate from the user node, wherein the tunnel service support server provides at least one tunnel router address, as an address of a corresponding tunnel router different from an address of the user node, providing a tunnel service to the user node based on the address of the user node, and wherein the user node is a node supporting Internet protocol version 6 (IPv6) function, wherein when two or more tunnel router addresses are included in the second message received from the tunnel service support server, the two or more addresses of tunnel routers are sequentially recorded in the second message according to priorities of the two or more tunnel routers.