[ 1786.439504] br0: port 1(dummy0) entered blocking state
[ 1786.439582] br0: port 1(dummy0) entered disabled state
[ 1786.439648] dummy0: entered allmulticast mode
[ 1786.439729] dummy0: entered promiscuous mode
[ 1786.443183] br0: port 1(dummy0) entered blocking state
[ 1786.443212] br0: port 1(dummy0) entered forwarding state
[ 1786.693833] dummy0: left allmulticast mode
[ 1786.693871] dummy0: left promiscuous mode
[ 1786.693927] br0: port 1(dummy0) entered disabled state