[  251.895928] br0: port 1(dummy0) entered disabled state
[  251.969756] br0: port 1(dummy0) entered listening state
[  253.070729] br0: port 1(dummy0) entered learning state
[  253.128351] br0: port 1(dummy0) entered forwarding state
[  253.183183] br0: port 1(dummy0) entered forwarding state
[  268.344984] br0: port 1(dummy0) entered disabled state
[  268.370089] br0: port 1(dummy0) entered blocking state
[  268.370095] br0: port 1(dummy0) entered listening state
[  288.655985] br0: port 1(dummy0) entered learning state
[  309.135794] br0: port 1(dummy0) entered forwarding state
[  309.135807] br0: topology change detected, propagating
[  328.660179] br0: port 1(dummy0) entered disabled state
[  328.682073] device dummy0 left promiscuous mode
[  328.682102] br0: port 1(dummy0) entered disabled state