[  252.734689][ T5829] br0: port 1(dummy0) entered blocking state
[  252.735476][ T5829] br0: port 1(dummy0) entered disabled state
[  252.735649][ T5829] dummy0: entered allmulticast mode
[  252.736582][ T5829] dummy0: entered promiscuous mode
[  252.762029][ T5830] br0: port 1(dummy0) entered blocking state
[  252.762280][ T5830] br0: port 1(dummy0) entered forwarding state
[  254.963270][   T71] dummy0: left allmulticast mode
[  254.963818][   T71] dummy0: left promiscuous mode
[  254.964169][   T71] br0: port 1(dummy0) entered disabled state