[ 1581.625025] br0: port 1(dummy0) entered blocking state
[ 1581.625071] br0: port 1(dummy0) entered disabled state
[ 1581.625106] dummy0: entered allmulticast mode
[ 1581.625156] dummy0: entered promiscuous mode
[ 1581.628092] br0: port 1(dummy0) entered blocking state
[ 1581.628154] br0: port 1(dummy0) entered forwarding state
[ 1581.829986] dummy0: left allmulticast mode
[ 1581.830049] dummy0: left promiscuous mode
[ 1581.830107] br0: port 1(dummy0) entered disabled state