[ 1717.402557] br0: port 1(dummy0) entered blocking state
[ 1717.402600] br0: port 1(dummy0) entered disabled state
[ 1717.402633] dummy0: entered allmulticast mode
[ 1717.402695] dummy0: entered promiscuous mode
[ 1717.405535] br0: port 1(dummy0) entered blocking state
[ 1717.405567] br0: port 1(dummy0) entered forwarding state
[ 1717.610122] dummy0: left allmulticast mode
[ 1717.610152] dummy0: left promiscuous mode
[ 1717.610185] br0: port 1(dummy0) entered disabled state