[ 1842.477164] br0: port 1(dummy0) entered blocking state
[ 1842.477245] br0: port 1(dummy0) entered disabled state
[ 1842.477314] dummy0: entered allmulticast mode
[ 1842.477396] dummy0: entered promiscuous mode
[ 1842.480621] br0: port 1(dummy0) entered blocking state
[ 1842.480660] br0: port 1(dummy0) entered forwarding state
[ 1842.707803] dummy0: left allmulticast mode
[ 1842.707840] dummy0: left promiscuous mode
[ 1842.707894] br0: port 1(dummy0) entered disabled state