[ 2130.941952][ T9408] br0: port 1(dummy0) entered blocking state
[ 2130.942264][ T9408] br0: port 1(dummy0) entered disabled state
[ 2130.942558][ T9408] dummy0: entered allmulticast mode
[ 2130.943861][ T9408] dummy0: entered promiscuous mode
[ 2130.974209][ T9409] br0: port 1(dummy0) entered blocking state
[ 2130.974619][ T9409] br0: port 1(dummy0) entered forwarding state
[ 2133.466219][   T12] dummy0: left allmulticast mode
[ 2133.467181][   T12] dummy0: left promiscuous mode
[ 2133.467514][   T12] br0: port 1(dummy0) entered disabled state