[  374.229534] br0: port 1(dummy0) entered blocking state
[  374.229549] br0: port 1(dummy0) entered disabled state
[  374.229669] device dummy0 entered promiscuous mode
[  374.256485] br0: port 1(dummy0) entered blocking state
[  374.256490] br0: port 1(dummy0) entered forwarding state
[  374.354169] br0: port 1(dummy0) entered disabled state
[  374.395846] device dummy0 left promiscuous mode
[  374.395871] br0: port 1(dummy0) entered disabled state