[ 1691.666016] br0: port 1(dummy0) entered blocking state
[ 1691.666089] br0: port 1(dummy0) entered disabled state
[ 1691.666163] dummy0: entered allmulticast mode
[ 1691.666264] dummy0: entered promiscuous mode
[ 1691.669901] br0: port 1(dummy0) entered blocking state
[ 1691.669933] br0: port 1(dummy0) entered forwarding state
[ 1691.897250] dummy0: left allmulticast mode
[ 1691.897283] dummy0: left promiscuous mode
[ 1691.897314] br0: port 1(dummy0) entered disabled state