[ 2182.269575][ T8176] br0: port 1(dummy0) entered blocking state
[ 2182.269813][ T8176] br0: port 1(dummy0) entered disabled state
[ 2182.270041][ T8176] dummy0: entered allmulticast mode
[ 2182.271015][ T8176] dummy0: entered promiscuous mode
[ 2182.300432][ T8177] br0: port 1(dummy0) entered blocking state
[ 2182.300618][ T8177] br0: port 1(dummy0) entered forwarding state
[ 2184.353012][   T71] dummy0: left allmulticast mode
[ 2184.353174][   T71] dummy0: left promiscuous mode
[ 2184.353403][   T71] br0: port 1(dummy0) entered disabled state