[ 1745.230678] br0: port 1(dummy0) entered blocking state
[ 1745.230746] br0: port 1(dummy0) entered disabled state
[ 1745.230817] dummy0: entered allmulticast mode
[ 1745.230911] dummy0: entered promiscuous mode
[ 1745.234578] br0: port 1(dummy0) entered blocking state
[ 1745.234611] br0: port 1(dummy0) entered forwarding state
[ 1745.487753] dummy0: left allmulticast mode
[ 1745.487783] dummy0: left promiscuous mode
[ 1745.487815] br0: port 1(dummy0) entered disabled state