For example, the wide-area routed network 10 may employ the Internet Protocol (IP) with IP version 4 (IPv4) addressing, and employ routing protocols such as Border Gateway Protocol (BGP), Open Shortest Path First (OSPF), Routing Information Protocol (RIP), etc. [0027] Each VPRN, which is made up of a corresponding set of VPRN subnetworks 12, is a routed network having its own network address space