[ 1887.898134] br0: port 1(dummy0) entered blocking state
[ 1887.898167] br0: port 1(dummy0) entered disabled state
[ 1887.898200] dummy0: entered allmulticast mode
[ 1887.898250] dummy0: entered promiscuous mode
[ 1887.901444] br0: port 1(dummy0) entered blocking state
[ 1887.901505] br0: port 1(dummy0) entered forwarding state
[ 1888.137788] dummy0: left allmulticast mode
[ 1888.137816] dummy0: left promiscuous mode
[ 1888.137842] br0: port 1(dummy0) entered disabled state