[  878.967639] br0: port 1(dummy0) entered blocking state
[  878.967712] br0: port 1(dummy0) entered disabled state
[  878.967780] dummy0: entered allmulticast mode
[  878.967864] dummy0: entered promiscuous mode
[  878.970623] br0: port 1(dummy0) entered blocking state
[  878.970655] br0: port 1(dummy0) entered forwarding state
[  879.164177] dummy0: left allmulticast mode
[  879.164212] dummy0: left promiscuous mode
[  879.164267] br0: port 1(dummy0) entered disabled state