[ 1665.165718] br0: port 1(dummy0) entered blocking state
[ 1665.165770] br0: port 1(dummy0) entered disabled state
[ 1665.165805] dummy0: entered allmulticast mode
[ 1665.165853] dummy0: entered promiscuous mode
[ 1665.169170] br0: port 1(dummy0) entered blocking state
[ 1665.169210] br0: port 1(dummy0) entered forwarding state
[ 1665.390416] dummy0: left allmulticast mode
[ 1665.390470] dummy0: left promiscuous mode
[ 1665.390502] br0: port 1(dummy0) entered disabled state