[  374.699186] br0: port 1(dummy0) entered blocking state
[  374.699198] br0: port 1(dummy0) entered disabled state
[  374.699293] device dummy0 entered promiscuous mode
[  374.728424] br0: port 1(dummy0) entered blocking state
[  374.728434] br0: port 1(dummy0) entered forwarding state
[  374.873565] br0: port 1(dummy0) entered disabled state
[  374.918298] device dummy0 left promiscuous mode
[  374.918343] br0: port 1(dummy0) entered disabled state