[ 1634.258660] br0: port 1(dummy0) entered blocking state
[ 1634.258730] br0: port 1(dummy0) entered disabled state
[ 1634.258800] dummy0: entered allmulticast mode
[ 1634.258885] dummy0: entered promiscuous mode
[ 1634.261786] br0: port 1(dummy0) entered blocking state
[ 1634.261819] br0: port 1(dummy0) entered forwarding state
[ 1634.467522] dummy0: left allmulticast mode
[ 1634.467550] dummy0: left promiscuous mode
[ 1634.467575] br0: port 1(dummy0) entered disabled state