Both IPv4 and IPv6 node discovery is supported. However, LSA type 10 is only advertised on OSPFv2 and not OSPFv3. If the operator wants to use IPv6 or dual-stack, OSPFv2 must be configured under VPRN to advertise the node information using LSA type 10 opaque. In addition, OSPFV3 can also be enabled to advertise IPv6 routes and interfaces for IPv6 reachability. If both IPv4 and IPv6 are configured on the loopback interface within the VPRN (dual-stack) then both values are sent in the OSPFv2 LSA type 10, NMS prefers one over the other. In this case, all discovered routers must be configured with dual-stack OSPFv2 and OSPFv3.