[ 1738.020598] br0: port 1(dummy0) entered blocking state
[ 1738.020641] br0: port 1(dummy0) entered disabled state
[ 1738.020675] dummy0: entered allmulticast mode
[ 1738.020726] dummy0: entered promiscuous mode
[ 1738.023430] br0: port 1(dummy0) entered blocking state
[ 1738.023461] br0: port 1(dummy0) entered forwarding state
[ 1738.202087] dummy0: left allmulticast mode
[ 1738.202126] dummy0: left promiscuous mode
[ 1738.202157] br0: port 1(dummy0) entered disabled state