[ 2344.141645][T20934] br0: port 1(dummy0) entered blocking state
[ 2344.141962][T20934] br0: port 1(dummy0) entered disabled state
[ 2344.142256][T20934] dummy0: entered allmulticast mode
[ 2344.143266][T20934] dummy0: entered promiscuous mode
[ 2344.170126][T20935] br0: port 1(dummy0) entered blocking state
[ 2344.170615][T20935] br0: port 1(dummy0) entered forwarding state
[ 2346.689384][   T12] dummy0: left allmulticast mode
[ 2346.689803][   T12] dummy0: left promiscuous mode
[ 2346.690126][   T12] br0: port 1(dummy0) entered disabled state