Patent ID: 8711858

Claim:
A packet communication system, comprising: a user device; a node that is configured to receive packet data sent by the user device; a plurality of content servers for which a communication path is configurable from the node; a plurality of address resolution servers that are communicatively connected to the node, and resolve addresses used for accessing the content servers based on a source of received packet data; a transfer device that transfers, to a first address resolution server, first packet data sent by the user device for accessing a first content server, the first packet data being a DNS (Domain Name System) request requesting an address corresponding to a URL (Uniform Resource Locator); a transmission device that generates second packet data by changing a sender of the first packet data to the node, and sends the second packet data to a second address resolution server, the second packet data being the DNS request; a comparison device that compares first and second address resolution results sent back from the first and second address resolution servers for the first and second packet data; and a communication path configuration device that, when the first and second address resolution results do not match, allocates the second address resolution result to the user device, and configures a communication path between the user device and a second content server indicated by the second address resolution result.