[ 1831.914258] br0: port 1(dummy0) entered blocking state
[ 1831.914293] br0: port 1(dummy0) entered disabled state
[ 1831.914328] dummy0: entered allmulticast mode
[ 1831.914379] dummy0: entered promiscuous mode
[ 1831.917941] br0: port 1(dummy0) entered blocking state
[ 1831.917977] br0: port 1(dummy0) entered forwarding state
[ 1832.191607] dummy0: left allmulticast mode
[ 1832.191694] dummy0: left promiscuous mode
[ 1832.191756] br0: port 1(dummy0) entered disabled state