| http://www.w3.org/ns/prov#value | - According to the routing information shown in FIG. 6, for example, if a packet transmitted from the PPTP server 200 is addressed to the file server 300, the routing information obtaining unit 202 refers to the row indicating the destination IP address ???default???, and obtains information such as the destination netmask 0.0.0.0, and the gateway and the interface ???default???.
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