[ 1749.436287] br0: port 1(dummy0) entered blocking state
[ 1749.436325] br0: port 1(dummy0) entered disabled state
[ 1749.436363] dummy0: entered allmulticast mode
[ 1749.436414] dummy0: entered promiscuous mode
[ 1749.440088] br0: port 1(dummy0) entered blocking state
[ 1749.440122] br0: port 1(dummy0) entered forwarding state
[ 1749.714599] dummy0: left allmulticast mode
[ 1749.714628] dummy0: left promiscuous mode
[ 1749.714658] br0: port 1(dummy0) entered disabled state