[ 2207.642376][ T8902] br0: port 1(dummy0) entered blocking state
[ 2207.642718][ T8902] br0: port 1(dummy0) entered disabled state
[ 2207.643006][ T8902] dummy0: entered allmulticast mode
[ 2207.644178][ T8902] dummy0: entered promiscuous mode
[ 2207.672186][ T8903] br0: port 1(dummy0) entered blocking state
[ 2207.673074][ T8903] br0: port 1(dummy0) entered forwarding state
[ 2210.220620][   T71] dummy0: left allmulticast mode
[ 2210.221746][   T71] dummy0: left promiscuous mode
[ 2210.222090][   T71] br0: port 1(dummy0) entered disabled state