[ 1911.475122] br0: port 1(dummy0) entered blocking state
[ 1911.475156] br0: port 1(dummy0) entered disabled state
[ 1911.475187] dummy0: entered allmulticast mode
[ 1911.475234] dummy0: entered promiscuous mode
[ 1911.478679] br0: port 1(dummy0) entered blocking state
[ 1911.478739] br0: port 1(dummy0) entered forwarding state
[ 1911.727463] dummy0: left allmulticast mode
[ 1911.727494] dummy0: left promiscuous mode
[ 1911.727522] br0: port 1(dummy0) entered disabled state