[ 1883.214804] br0: port 1(dummy0) entered blocking state
[ 1883.214844] br0: port 1(dummy0) entered disabled state
[ 1883.214880] dummy0: entered allmulticast mode
[ 1883.214935] dummy0: entered promiscuous mode
[ 1883.218406] br0: port 1(dummy0) entered blocking state
[ 1883.218444] br0: port 1(dummy0) entered forwarding state
[ 1883.470909] dummy0: left allmulticast mode
[ 1883.470980] dummy0: left promiscuous mode
[ 1883.471040] br0: port 1(dummy0) entered disabled state