[ 1730.003163] br0: port 1(dummy0) entered blocking state
[ 1730.003207] br0: port 1(dummy0) entered disabled state
[ 1730.003242] dummy0: entered allmulticast mode
[ 1730.003302] dummy0: entered promiscuous mode
[ 1730.006432] br0: port 1(dummy0) entered blocking state
[ 1730.006465] br0: port 1(dummy0) entered forwarding state
[ 1730.212901] dummy0: left allmulticast mode
[ 1730.212936] dummy0: left promiscuous mode
[ 1730.212970] br0: port 1(dummy0) entered disabled state