[ 1800.141669] br0: port 1(dummy0) entered blocking state
[ 1800.141751] br0: port 1(dummy0) entered disabled state
[ 1800.141819] dummy0: entered allmulticast mode
[ 1800.141907] dummy0: entered promiscuous mode
[ 1800.145505] br0: port 1(dummy0) entered blocking state
[ 1800.145540] br0: port 1(dummy0) entered forwarding state
[ 1800.418454] dummy0: left allmulticast mode
[ 1800.418494] dummy0: left promiscuous mode
[ 1800.418526] br0: port 1(dummy0) entered disabled state