[ 3853.051031] br0: port 1(dummy0) entered disabled state
[ 3853.407881] br0: port 1(dummy0) entered listening state
[ 3855.038296] br0: port 1(dummy0) entered learning state
[ 3855.353558] br0: port 1(dummy0) entered forwarding state
[ 3855.676683] br0: port 1(dummy0) entered forwarding state
[ 3871.536931] br0: port 1(dummy0) entered disabled state
[ 3871.654862] br0: port 1(dummy0) entered blocking state
[ 3871.676273] br0: port 1(dummy0) entered listening state
[ 3891.844182] br0: port 1(dummy0) entered learning state
[ 3912.324437] br0: port 1(dummy0) entered forwarding state
[ 3912.343564] br0: topology change detected, propagating
[ 3933.144252] br0: port 1(dummy0) entered disabled state
[ 3933.298340] device dummy0 left promiscuous mode
[ 3933.299809] br0: port 1(dummy0) entered disabled state