// request
data, err := msgCodec.EncodeMsg(&interfaces.CreateLoopback{MacAddress: interfaces.MacAddress{1, 2, 3, 4, 5, 6}}, 11)
// request
data, err := msgCodec.EncodeMsg(&interfaces.CreateLoopback{MacAddress: interfaces.MacAddress{1, 2, 3, 4, 5, 6}}, 11)