[ 2272.678483][ T7598] br0: port 1(dummy0) entered blocking state
[ 2272.678809][ T7598] br0: port 1(dummy0) entered disabled state
[ 2272.679146][ T7598] dummy0: entered allmulticast mode
[ 2272.680208][ T7598] dummy0: entered promiscuous mode
[ 2272.706548][ T7599] br0: port 1(dummy0) entered blocking state
[ 2272.706837][ T7599] br0: port 1(dummy0) entered forwarding state
[ 2275.204577][   T12] dummy0: left allmulticast mode
[ 2275.204870][   T12] dummy0: left promiscuous mode
[ 2275.205237][   T12] br0: port 1(dummy0) entered disabled state