[ 1687.200121] br0: port 1(dummy0) entered blocking state
[ 1687.200164] br0: port 1(dummy0) entered disabled state
[ 1687.200204] dummy0: entered allmulticast mode
[ 1687.200263] dummy0: entered promiscuous mode
[ 1687.203729] br0: port 1(dummy0) entered blocking state
[ 1687.203793] br0: port 1(dummy0) entered forwarding state
[ 1687.433764] dummy0: left allmulticast mode
[ 1687.433796] dummy0: left promiscuous mode
[ 1687.433829] br0: port 1(dummy0) entered disabled state