In the YANG module, the bridge address is read-write and mandatory. This forces a config model to explicitly configure a globally unique MAC address for the bridge. Historically the bridge address is a read-only value allocated by the manufacturer and embedded in the bridge. The proposed change makes the address read-write, but mandatory-false, which allows a config model to provide an address but does not require it. Not specifying an address in the config model allows the bridge to use the address provided by the manufacturer.