[ 2894.932698] br0: port 1(dummy0) entered disabled state
[ 2895.007277] br0: port 1(dummy0) entered listening state
[ 2896.172598] br0: port 1(dummy0) entered learning state
[ 2896.246609] br0: port 1(dummy0) entered forwarding state
[ 2896.322008] br0: port 1(dummy0) entered forwarding state
[ 2911.522628] br0: port 1(dummy0) entered disabled state
[ 2911.549373] br0: port 1(dummy0) entered blocking state
[ 2911.549391] br0: port 1(dummy0) entered listening state
[ 2932.050056] br0: port 1(dummy0) entered learning state
[ 2952.531182] br0: port 1(dummy0) entered forwarding state
[ 2952.531204] br0: topology change detected, propagating
[ 2971.900505] br0: port 1(dummy0) entered disabled state
[ 2971.929271] device dummy0 left promiscuous mode
[ 2971.929311] br0: port 1(dummy0) entered disabled state