[ 1743.768529] br0: port 1(dummy0) entered blocking state
[ 1743.768555] br0: port 1(dummy0) entered disabled state
[ 1743.768578] dummy0: entered allmulticast mode
[ 1743.768620] dummy0: entered promiscuous mode
[ 1743.771847] br0: port 1(dummy0) entered blocking state
[ 1743.771897] br0: port 1(dummy0) entered forwarding state
[ 1743.980276] dummy0: left allmulticast mode
[ 1743.980296] dummy0: left promiscuous mode
[ 1743.980319] br0: port 1(dummy0) entered disabled state