[ 1789.998593] br0: port 1(dummy0) entered blocking state
[ 1789.998677] br0: port 1(dummy0) entered disabled state
[ 1789.998748] dummy0: entered allmulticast mode
[ 1789.998830] dummy0: entered promiscuous mode
[ 1790.001611] br0: port 1(dummy0) entered blocking state
[ 1790.001643] br0: port 1(dummy0) entered forwarding state
[ 1790.184505] dummy0: left allmulticast mode
[ 1790.184538] dummy0: left promiscuous mode
[ 1790.184569] br0: port 1(dummy0) entered disabled state