[ 6687.288318] br0: port 1(dummy0) entered disabled state
[ 6687.343823] br0: port 1(dummy0) entered listening state
[ 6688.459255] br0: port 1(dummy0) entered learning state
[ 6688.513063] br0: port 1(dummy0) entered forwarding state
[ 6688.568794] br0: port 1(dummy0) entered forwarding state
[ 6703.737697] br0: port 1(dummy0) entered disabled state
[ 6703.762702] br0: port 1(dummy0) entered blocking state
[ 6703.762709] br0: port 1(dummy0) entered listening state
[ 6723.979277] br0: port 1(dummy0) entered learning state
[ 6744.459189] br0: port 1(dummy0) entered forwarding state
[ 6744.459214] br0: topology change detected, propagating
[ 6764.150629] br0: port 1(dummy0) entered disabled state
[ 6764.176386] device dummy0 left promiscuous mode
[ 6764.176429] br0: port 1(dummy0) entered disabled state