[ 1674.106189] br0: port 1(dummy0) entered blocking state
[ 1674.106236] br0: port 1(dummy0) entered disabled state
[ 1674.106267] dummy0: entered allmulticast mode
[ 1674.106322] dummy0: entered promiscuous mode
[ 1674.108857] br0: port 1(dummy0) entered blocking state
[ 1674.108894] br0: port 1(dummy0) entered forwarding state
[ 1674.272442] dummy0: left allmulticast mode
[ 1674.272506] dummy0: left promiscuous mode
[ 1674.272563] br0: port 1(dummy0) entered disabled state