[ 1667.002181] br0: port 1(dummy0) entered blocking state
[ 1667.002261] br0: port 1(dummy0) entered disabled state
[ 1667.002329] dummy0: entered allmulticast mode
[ 1667.002414] dummy0: entered promiscuous mode
[ 1667.005417] br0: port 1(dummy0) entered blocking state
[ 1667.005449] br0: port 1(dummy0) entered forwarding state
[ 1667.202939] dummy0: left allmulticast mode
[ 1667.202980] dummy0: left promiscuous mode
[ 1667.203010] br0: port 1(dummy0) entered disabled state