[ 1952.844770] br0: port 1(dummy0) entered blocking state
[ 1952.844811] br0: port 1(dummy0) entered disabled state
[ 1952.844846] dummy0: entered allmulticast mode
[ 1952.844892] dummy0: entered promiscuous mode
[ 1952.848341] br0: port 1(dummy0) entered blocking state
[ 1952.848403] br0: port 1(dummy0) entered forwarding state
[ 1953.108685] dummy0: left allmulticast mode
[ 1953.108721] dummy0: left promiscuous mode
[ 1953.108752] br0: port 1(dummy0) entered disabled state