[ 1698.481885] br0: port 1(dummy0) entered blocking state
[ 1698.481923] br0: port 1(dummy0) entered disabled state
[ 1698.481955] dummy0: entered allmulticast mode
[ 1698.482008] dummy0: entered promiscuous mode
[ 1698.484452] br0: port 1(dummy0) entered blocking state
[ 1698.484513] br0: port 1(dummy0) entered forwarding state
[ 1698.673804] dummy0: left allmulticast mode
[ 1698.673873] dummy0: left promiscuous mode
[ 1698.673942] br0: port 1(dummy0) entered disabled state