[ 1982.528667][ T5919] br0: port 1(dummy0) entered blocking state
[ 1982.529341][ T5919] br0: port 1(dummy0) entered disabled state
[ 1982.529504][ T5919] dummy0: entered allmulticast mode
[ 1982.530381][ T5919] dummy0: entered promiscuous mode
[ 1982.563400][ T5920] br0: port 1(dummy0) entered blocking state
[ 1982.563970][ T5920] br0: port 1(dummy0) entered forwarding state
[ 1984.530522][   T69] dummy0: left allmulticast mode
[ 1984.531264][   T69] dummy0: left promiscuous mode
[ 1984.531487][   T69] br0: port 1(dummy0) entered disabled state