[ 1717.787667] br0: port 1(dummy0) entered blocking state
[ 1717.787711] br0: port 1(dummy0) entered disabled state
[ 1717.787749] dummy0: entered allmulticast mode
[ 1717.787802] dummy0: entered promiscuous mode
[ 1717.790631] br0: port 1(dummy0) entered blocking state
[ 1717.790698] br0: port 1(dummy0) entered forwarding state
[ 1717.990624] dummy0: left allmulticast mode
[ 1717.990657] dummy0: left promiscuous mode
[ 1717.990689] br0: port 1(dummy0) entered disabled state