Improve L3 Link Calculation Accuracy for Devices Sharing the Same Subnet

NetBrain does not always correctly calculate Layer 3 links between devices that share a common subnet, even when each device has a properly discovered interface and IP address. In some cases no link is drawn between devices in the same subnet despite other L3 links existing for that subnet, and in other cases a link is drawn but fails to attach to the existing link group for that subnet. This enhancement would improve the L3 link calculation logic to reliably identify and connect all devices sharing a common subnet into a single, accurate link representation on the topology map. Customers relying on automated L3 topology mapping would gain more complete and trustworthy network diagrams, reducing the need for manual link correction and improving confidence in troubleshooting and documentation.