[ 1772.307907] br0: port 1(dummy0) entered blocking state
[ 1772.307955] br0: port 1(dummy0) entered disabled state
[ 1772.307990] dummy0: entered allmulticast mode
[ 1772.308042] dummy0: entered promiscuous mode
[ 1772.311334] br0: port 1(dummy0) entered blocking state
[ 1772.311365] br0: port 1(dummy0) entered forwarding state
[ 1772.541636] dummy0: left allmulticast mode
[ 1772.541679] dummy0: left promiscuous mode
[ 1772.541743] br0: port 1(dummy0) entered disabled state