[ 1667.600881] br0: port 1(dummy0) entered blocking state
[ 1667.600983] br0: port 1(dummy0) entered disabled state
[ 1667.601085] dummy0: entered allmulticast mode
[ 1667.601211] dummy0: entered promiscuous mode
[ 1667.604591] br0: port 1(dummy0) entered blocking state
[ 1667.604670] br0: port 1(dummy0) entered forwarding state
[ 1667.798294] dummy0: left allmulticast mode
[ 1667.798341] dummy0: left promiscuous mode
[ 1667.798422] br0: port 1(dummy0) entered disabled state