Patent ID: 7385989

Claim:
An information processing apparatus connected to a network for communicating with another apparatus through said network, said information processing apparatus comprising: an address management unit which generates a first DNS (Domain Name System) address query packet using a first version of a communication protocol, said first DNS address query packet inquiring as to an address of said other apparatus on said network, said address management unit utilizing information in said first DNS address query packet to generate second address query packet using a second version of said communication protocol, said second DNS address query packet also inquiring as to the address of said other apparatus, said address management unit being configured to generate said first and second DNS address query packets when said information processing apparatus starts communication with said other apparatus; and a network control unit which receives said first and second DNS address query packets generated by said address management unit, and which sends said first DNS address query packet corresponding to said first version of the communication protocol and said second DNS address query packet corresponding to said second version of the communication protocol to said network for inquiring as to the address of the other apparatus on the network.