[ 1001.680747] br0: port 1(dummy0) entered blocking state
[ 1001.680794] br0: port 1(dummy0) entered disabled state
[ 1001.680827] dummy0: entered allmulticast mode
[ 1001.680877] dummy0: entered promiscuous mode
[ 1001.684771] br0: port 1(dummy0) entered blocking state
[ 1001.684812] br0: port 1(dummy0) entered forwarding state
[ 1001.960034] dummy0: left allmulticast mode
[ 1001.960076] dummy0: left promiscuous mode
[ 1001.960109] br0: port 1(dummy0) entered disabled state