[ 1800.706928] br0: port 1(dummy0) entered blocking state
[ 1800.706968] br0: port 1(dummy0) entered disabled state
[ 1800.707002] dummy0: entered allmulticast mode
[ 1800.707053] dummy0: entered promiscuous mode
[ 1800.710519] br0: port 1(dummy0) entered blocking state
[ 1800.710580] br0: port 1(dummy0) entered forwarding state
[ 1800.959774] dummy0: left allmulticast mode
[ 1800.959807] dummy0: left promiscuous mode
[ 1800.959839] br0: port 1(dummy0) entered disabled state