[ 1623.742586] br0: port 1(dummy0) entered blocking state
[ 1623.742660] br0: port 1(dummy0) entered disabled state
[ 1623.742734] dummy0: entered allmulticast mode
[ 1623.742819] dummy0: entered promiscuous mode
[ 1623.745698] br0: port 1(dummy0) entered blocking state
[ 1623.745730] br0: port 1(dummy0) entered forwarding state
[ 1623.930485] dummy0: left allmulticast mode
[ 1623.930552] dummy0: left promiscuous mode
[ 1623.930614] br0: port 1(dummy0) entered disabled state