[  262.992612][ T4940] br0: port 1(dummy0) entered blocking state
[  262.993026][ T4940] br0: port 1(dummy0) entered disabled state
[  262.993500][ T4940] dummy0: entered allmulticast mode
[  262.994680][ T4940] dummy0: entered promiscuous mode
[  263.024445][ T4941] br0: port 1(dummy0) entered blocking state
[  263.024976][ T4941] br0: port 1(dummy0) entered forwarding state
[  265.653178][   T70] dummy0: left allmulticast mode
[  265.653716][   T70] dummy0: left promiscuous mode
[  265.654290][   T70] br0: port 1(dummy0) entered disabled state