In a drop-in or bridge configuration, the XTM device is configured with the same IP address on each interface. Your XTM device automatically discovers new devices that are connected to these interfaces and adds each new MAC address to its internal routing table. If you want to configure device connections manually, or if the Automatic Host Mapping feature does not operate correctly, you can add a related hosts entry. A related hosts entry creates a static route between the host IP address and one network interface. We recommend that you disable Automatic Host Mapping on interfaces for which you create a related hosts entry.