[ 1681.941220] br0: port 1(dummy0) entered blocking state
[ 1681.941275] br0: port 1(dummy0) entered disabled state
[ 1681.941313] dummy0: entered allmulticast mode
[ 1681.941360] dummy0: entered promiscuous mode
[ 1681.944098] br0: port 1(dummy0) entered blocking state
[ 1681.944130] br0: port 1(dummy0) entered forwarding state
[ 1682.122080] dummy0: left allmulticast mode
[ 1682.122114] dummy0: left promiscuous mode
[ 1682.122141] br0: port 1(dummy0) entered disabled state