Bridge MAC learning & forwarding update - 3: adding interface module configuration handler

Added #logical-interface level #transparent #port #configuration #handler in ethernet module. This will enable the configuration changes from the #logical-interface to #phy #port. Operator can arbitrarily #enable / #disable the #MAC #learning & #forwarding on the #interface and new handler will apply the changes in ethernet module on to the #phy #port.

#Ethernet update 108 ...
[commit db59f94aedb09bb826d618320c0ba425e5642dd4]