[ 1768.791407] br0: port 1(dummy0) entered blocking state
[ 1768.791451] br0: port 1(dummy0) entered disabled state
[ 1768.791487] dummy0: entered allmulticast mode
[ 1768.791551] dummy0: entered promiscuous mode
[ 1768.794865] br0: port 1(dummy0) entered blocking state
[ 1768.794899] br0: port 1(dummy0) entered forwarding state
[ 1769.047703] dummy0: left allmulticast mode
[ 1769.047732] dummy0: left promiscuous mode
[ 1769.047756] br0: port 1(dummy0) entered disabled state