[ 1581.153542] br0: port 1(dummy0) entered blocking state
[ 1581.153586] br0: port 1(dummy0) entered disabled state
[ 1581.153618] dummy0: entered allmulticast mode
[ 1581.153680] dummy0: entered promiscuous mode
[ 1581.156256] br0: port 1(dummy0) entered blocking state
[ 1581.156320] br0: port 1(dummy0) entered forwarding state
[ 1581.325956] dummy0: left allmulticast mode
[ 1581.326021] dummy0: left promiscuous mode
[ 1581.326052] br0: port 1(dummy0) entered disabled state