[ 1599.845410] br0: port 1(dummy0) entered blocking state
[ 1599.845454] br0: port 1(dummy0) entered disabled state
[ 1599.845493] dummy0: entered allmulticast mode
[ 1599.845547] dummy0: entered promiscuous mode
[ 1599.848084] br0: port 1(dummy0) entered blocking state
[ 1599.848117] br0: port 1(dummy0) entered forwarding state
[ 1600.029532] dummy0: left allmulticast mode
[ 1600.029602] dummy0: left promiscuous mode
[ 1600.029702] br0: port 1(dummy0) entered disabled state