[ 2251.703277][T12447] br0: port 1(dummy0) entered blocking state
[ 2251.703471][T12447] br0: port 1(dummy0) entered disabled state
[ 2251.703635][T12447] dummy0: entered allmulticast mode
[ 2251.704508][T12447] dummy0: entered promiscuous mode
[ 2251.738311][T12448] br0: port 1(dummy0) entered blocking state
[ 2251.738651][T12448] br0: port 1(dummy0) entered forwarding state
[ 2254.018563][   T12] dummy0: left allmulticast mode
[ 2254.018890][   T12] dummy0: left promiscuous mode
[ 2254.019137][   T12] br0: port 1(dummy0) entered disabled state