Configurable 'None' Option for MAC Table Retrieval Method per Device Driver

NetBrain currently allows the MAC Table retrieval method for a device driver to be set to 'None' only through a direct database change, rather than through a supported configuration option, even when a device driver variant does not have a MAC table to retrieve. This enhancement would expose the retrieval method selection, including a 'None' option, as a standard configurable setting for applicable device drivers. Customers managing devices with driver variants that differ in MAC table availability would be able to configure retrieval behavior correctly without relying on unsupported database modifications, reducing configuration errors and support effort.