[ 1809.517927] br0: port 1(dummy0) entered blocking state
[ 1809.517952] br0: port 1(dummy0) entered disabled state
[ 1809.517974] dummy0: entered allmulticast mode
[ 1809.518010] dummy0: entered promiscuous mode
[ 1809.521988] br0: port 1(dummy0) entered blocking state
[ 1809.522011] br0: port 1(dummy0) entered forwarding state
[ 1809.815793] dummy0: left allmulticast mode
[ 1809.815851] dummy0: left promiscuous mode
[ 1809.815900] br0: port 1(dummy0) entered disabled state