[ 1868.721109] br0: port 1(dummy0) entered blocking state
[ 1868.721145] br0: port 1(dummy0) entered disabled state
[ 1868.721167] dummy0: entered allmulticast mode
[ 1868.721237] dummy0: entered promiscuous mode
[ 1868.724813] br0: port 1(dummy0) entered blocking state
[ 1868.724841] br0: port 1(dummy0) entered forwarding state
[ 1868.974441] dummy0: left allmulticast mode
[ 1868.974471] dummy0: left promiscuous mode
[ 1868.974497] br0: port 1(dummy0) entered disabled state