[ 3500.283314] br0: port 1(dummy0) entered blocking state [ 3500.283331] br0: port 1(dummy0) entered disabled state [ 3500.283417] device dummy0 entered promiscuous mode [ 3500.359274] br0: port 1(dummy0) entered blocking state [ 3500.359287] br0: port 1(dummy0) entered forwarding state [ 3500.612973] br0: port 1(dummy0) entered disabled state [ 3500.730982] device dummy0 left promiscuous mode [ 3500.731027] br0: port 1(dummy0) entered disabled state