[ 2134.882800][T12244] br0: port 1(dummy0) entered blocking state
[ 2134.883029][T12244] br0: port 1(dummy0) entered disabled state
[ 2134.883250][T12244] dummy0: entered allmulticast mode
[ 2134.884267][T12244] dummy0: entered promiscuous mode
[ 2134.920617][T12245] br0: port 1(dummy0) entered blocking state
[ 2134.920968][T12245] br0: port 1(dummy0) entered forwarding state
[ 2136.876391][   T12] dummy0: left allmulticast mode
[ 2136.877304][   T12] dummy0: left promiscuous mode
[ 2136.877637][   T12] br0: port 1(dummy0) entered disabled state