[ 2001.428270] br0: port 1(dummy0) entered blocking state
[ 2001.428349] br0: port 1(dummy0) entered disabled state
[ 2001.428417] dummy0: entered allmulticast mode
[ 2001.428499] dummy0: entered promiscuous mode
[ 2001.431961] br0: port 1(dummy0) entered blocking state
[ 2001.431992] br0: port 1(dummy0) entered forwarding state
[ 2001.683553] dummy0: left allmulticast mode
[ 2001.683588] dummy0: left promiscuous mode
[ 2001.683615] br0: port 1(dummy0) entered disabled state