[ 1580.784859] br0: port 1(dummy0) entered blocking state
[ 1580.784907] br0: port 1(dummy0) entered disabled state
[ 1580.784942] dummy0: entered allmulticast mode
[ 1580.784993] dummy0: entered promiscuous mode
[ 1580.787738] br0: port 1(dummy0) entered blocking state
[ 1580.787801] br0: port 1(dummy0) entered forwarding state
[ 1580.970580] dummy0: left allmulticast mode
[ 1580.970611] dummy0: left promiscuous mode
[ 1580.970643] br0: port 1(dummy0) entered disabled state