[  723.053215] br0: port 1(dummy0) entered blocking state
[  723.053223] br0: port 1(dummy0) entered disabled state
[  723.053327] device dummy0 entered promiscuous mode
[  723.089815] br0: port 1(dummy0) entered blocking state
[  723.089820] br0: port 1(dummy0) entered forwarding state
[  723.226097] br0: port 1(dummy0) entered disabled state
[  723.286826] device dummy0 left promiscuous mode
[  723.286855] br0: port 1(dummy0) entered disabled state