[ 1630.470071] br0: port 1(dummy0) entered blocking state
[ 1630.470108] br0: port 1(dummy0) entered disabled state
[ 1630.470149] dummy0: entered allmulticast mode
[ 1630.470195] dummy0: entered promiscuous mode
[ 1630.472941] br0: port 1(dummy0) entered blocking state
[ 1630.473004] br0: port 1(dummy0) entered forwarding state
[ 1630.664034] dummy0: left allmulticast mode
[ 1630.664064] dummy0: left promiscuous mode
[ 1630.664100] br0: port 1(dummy0) entered disabled state