[ 1579.685519] br0: port 1(dummy0) entered blocking state
[ 1579.685561] br0: port 1(dummy0) entered disabled state
[ 1579.685594] dummy0: entered allmulticast mode
[ 1579.685651] dummy0: entered promiscuous mode
[ 1579.688531] br0: port 1(dummy0) entered blocking state
[ 1579.688566] br0: port 1(dummy0) entered forwarding state
[ 1579.875140] dummy0: left allmulticast mode
[ 1579.875206] dummy0: left promiscuous mode
[ 1579.875268] br0: port 1(dummy0) entered disabled state