[ 1882.485125] br0: port 1(dummy0) entered blocking state
[ 1882.485204] br0: port 1(dummy0) entered disabled state
[ 1882.485270] dummy0: entered allmulticast mode
[ 1882.485363] dummy0: entered promiscuous mode
[ 1882.488574] br0: port 1(dummy0) entered blocking state
[ 1882.488607] br0: port 1(dummy0) entered forwarding state
[ 1882.717014] dummy0: left allmulticast mode
[ 1882.717047] dummy0: left promiscuous mode
[ 1882.717098] br0: port 1(dummy0) entered disabled state