Support for IP Unnumbered L3 Link Mapping

NetBrain currently cannot correctly map Layer 3 links between devices that use IP unnumbered interfaces, where a point-to-point interface borrows its address from a loopback rather than having its own unique subnet. Although the neighbor relationship may be detected in the neighbor discovery table, the platform is unable to resolve and place the correct point-to-point link on the topology map. This enhancement would add logic to identify and accurately map L3 links for IP unnumbered interfaces, using available neighbor and interface data to determine the correct link endpoints. Customers using IP unnumbered addressing to conserve address space would gain accurate, automated topology visibility without needing to manually add or correct links on the map.