[ 1687.662029] br0: port 1(dummy0) entered blocking state
[ 1687.662116] br0: port 1(dummy0) entered disabled state
[ 1687.662189] dummy0: entered allmulticast mode
[ 1687.662285] dummy0: entered promiscuous mode
[ 1687.665868] br0: port 1(dummy0) entered blocking state
[ 1687.665899] br0: port 1(dummy0) entered forwarding state
[ 1687.909546] dummy0: left allmulticast mode
[ 1687.909585] dummy0: left promiscuous mode
[ 1687.909676] br0: port 1(dummy0) entered disabled state