[ 1679.869496] br0: port 1(dummy0) entered blocking state
[ 1679.869570] br0: port 1(dummy0) entered disabled state
[ 1679.869636] dummy0: entered allmulticast mode
[ 1679.869717] dummy0: entered promiscuous mode
[ 1679.872575] br0: port 1(dummy0) entered blocking state
[ 1679.872606] br0: port 1(dummy0) entered forwarding state
[ 1680.069955] dummy0: left allmulticast mode
[ 1680.069991] dummy0: left promiscuous mode
[ 1680.070048] br0: port 1(dummy0) entered disabled state