[ 1877.193265][ T9169] br0: port 1(dummy0) entered blocking state
[ 1877.193475][ T9169] br0: port 1(dummy0) entered disabled state
[ 1877.193669][ T9169] dummy0: entered allmulticast mode
[ 1877.194720][ T9169] dummy0: entered promiscuous mode
[ 1877.230008][ T9170] br0: port 1(dummy0) entered blocking state
[ 1877.230290][ T9170] br0: port 1(dummy0) entered forwarding state
[ 1878.993768][   T69] dummy0: left allmulticast mode
[ 1878.994065][   T69] dummy0: left promiscuous mode
[ 1878.994277][   T69] br0: port 1(dummy0) entered disabled state