[ 2216.130232] br0: port 1(dummy0) entered disabled state
[ 2216.259302] br0: port 1(dummy0) entered listening state
[ 2217.522457] br0: port 1(dummy0) entered learning state
[ 2217.683505] br0: port 1(dummy0) entered forwarding state
[ 2217.844795] br0: port 1(dummy0) entered forwarding state
[ 2233.273735] br0: port 1(dummy0) entered disabled state
[ 2233.329494] br0: port 1(dummy0) entered blocking state
[ 2233.334628] br0: port 1(dummy0) entered listening state
[ 2253.539048] br0: port 1(dummy0) entered learning state
[ 2274.019054] br0: port 1(dummy0) entered forwarding state
[ 2274.024372] br0: topology change detected, propagating
[ 2294.018675] br0: port 1(dummy0) entered disabled state
[ 2294.068725] device dummy0 left promiscuous mode
[ 2294.073326] br0: port 1(dummy0) entered disabled state