Mobile terminal and network node

A mobile terminal capable of attaching to a network to perform packet communication, comprising:

• a plurality of radio communication interfaces;
• an address holding unit configured to hold a common address assigned to the plurality of radio communication interfaces in common and a dedicated address assigned individually to each of the plurality of radio communication interfaces;
• a binding registration processing unit configured to process first binding information indicative of a correspondence relationship between the mobile terminal and the common address and second binding information indicative of a correspondence relationship between each of the plurality of radio communication interfaces and the dedicated address assigned to each of the plurality of radio communication interfaces in such a manner to be registered with a network node for performing forwarding processing on a packet addressed to the mobile terminal;
• and
• an address setting unit configured to determine whether, upon transmission of a packet, the packet is a packet belonging to a flow necessary to be sent and received by using only a specific interface among the plurality of radio communication interfaces, and if determining that the packet is not a packet belonging to a flow necessary to be sent and received by using only the specific interface, using the common address as a source address of the packet.