[ 1866.506379] br0: port 1(dummy0) entered blocking state
[ 1866.506420] br0: port 1(dummy0) entered disabled state
[ 1866.506526] dummy0: entered allmulticast mode
[ 1866.506622] dummy0: entered promiscuous mode
[ 1866.510270] br0: port 1(dummy0) entered blocking state
[ 1866.510300] br0: port 1(dummy0) entered forwarding state
[ 1866.781998] dummy0: left allmulticast mode
[ 1866.782037] dummy0: left promiscuous mode
[ 1866.782068] br0: port 1(dummy0) entered disabled state