[ 1711.644572] br0: port 1(dummy0) entered blocking state
[ 1711.644621] br0: port 1(dummy0) entered disabled state
[ 1711.644657] dummy0: entered allmulticast mode
[ 1711.644714] dummy0: entered promiscuous mode
[ 1711.647263] br0: port 1(dummy0) entered blocking state
[ 1711.647301] br0: port 1(dummy0) entered forwarding state
[ 1711.836583] dummy0: left allmulticast mode
[ 1711.836633] dummy0: left promiscuous mode
[ 1711.836667] br0: port 1(dummy0) entered disabled state