[ 1699.564634] br0: port 1(dummy0) entered blocking state
[ 1699.564684] br0: port 1(dummy0) entered disabled state
[ 1699.564720] dummy0: entered allmulticast mode
[ 1699.564769] dummy0: entered promiscuous mode
[ 1699.568157] br0: port 1(dummy0) entered blocking state
[ 1699.568194] br0: port 1(dummy0) entered forwarding state
[ 1699.766569] dummy0: left allmulticast mode
[ 1699.766611] dummy0: left promiscuous mode
[ 1699.766644] br0: port 1(dummy0) entered disabled state