[ 2133.985392][ T8134] br0: port 1(dummy0) entered blocking state
[ 2133.985605][ T8134] br0: port 1(dummy0) entered disabled state
[ 2133.985783][ T8134] dummy0: entered allmulticast mode
[ 2133.986693][ T8134] dummy0: entered promiscuous mode
[ 2134.012433][ T8135] br0: port 1(dummy0) entered blocking state
[ 2134.012813][ T8135] br0: port 1(dummy0) entered forwarding state
[ 2136.071601][   T12] dummy0: left allmulticast mode
[ 2136.071954][   T12] dummy0: left promiscuous mode
[ 2136.072172][   T12] br0: port 1(dummy0) entered disabled state