[ 2536.323263] br0: port 1(dummy0) entered disabled state
[ 2536.438296] br0: port 1(dummy0) entered listening state
[ 2537.693902] br0: port 1(dummy0) entered learning state
[ 2537.807208] br0: port 1(dummy0) entered forwarding state
[ 2537.926359] br0: port 1(dummy0) entered forwarding state
[ 2553.262296] br0: port 1(dummy0) entered disabled state
[ 2553.352165] br0: port 1(dummy0) entered blocking state
[ 2553.352788] br0: port 1(dummy0) entered listening state
[ 2573.357250] br0: port 1(dummy0) entered learning state
[ 2593.836958] br0: port 1(dummy0) entered forwarding state
[ 2593.838204] br0: topology change detected, propagating
[ 2613.921089] br0: port 1(dummy0) entered disabled state
[ 2613.993094] device dummy0 left promiscuous mode
[ 2613.993805] br0: port 1(dummy0) entered disabled state