[ 1852.603102] br0: port 1(dummy0) entered blocking state
[ 1852.603141] br0: port 1(dummy0) entered disabled state
[ 1852.603179] dummy0: entered allmulticast mode
[ 1852.603233] dummy0: entered promiscuous mode
[ 1852.606786] br0: port 1(dummy0) entered blocking state
[ 1852.606819] br0: port 1(dummy0) entered forwarding state
[ 1852.858213] dummy0: left allmulticast mode
[ 1852.858295] dummy0: left promiscuous mode
[ 1852.858361] br0: port 1(dummy0) entered disabled state