[  645.045652] br0: port 1(dummy0) entered disabled state
[  645.120013] br0: port 1(dummy0) entered listening state
[  646.252744] br0: port 1(dummy0) entered learning state
[  646.329676] br0: port 1(dummy0) entered forwarding state
[  646.417668] br0: port 1(dummy0) entered forwarding state
[  661.621622] br0: port 1(dummy0) entered disabled state
[  661.651278] br0: port 1(dummy0) entered blocking state
[  661.651284] br0: port 1(dummy0) entered listening state
[  681.682327] br0: port 1(dummy0) entered learning state
[  702.162317] br0: port 1(dummy0) entered forwarding state
[  702.162330] br0: topology change detected, propagating
[  722.034879] br0: port 1(dummy0) entered disabled state
[  722.069135] device dummy0 left promiscuous mode
[  722.069173] br0: port 1(dummy0) entered disabled state