[ 1667.413586] br0: port 1(dummy0) entered blocking state
[ 1667.413637] br0: port 1(dummy0) entered disabled state
[ 1667.413665] dummy0: entered allmulticast mode
[ 1667.413711] dummy0: entered promiscuous mode
[ 1667.416421] br0: port 1(dummy0) entered blocking state
[ 1667.416452] br0: port 1(dummy0) entered forwarding state
[ 1667.602317] dummy0: left allmulticast mode
[ 1667.602358] dummy0: left promiscuous mode
[ 1667.602414] br0: port 1(dummy0) entered disabled state