[ 3723.080832] br0: port 1(dummy0) entered blocking state
[ 3723.080849] br0: port 1(dummy0) entered disabled state
[ 3723.080942] device dummy0 entered promiscuous mode
[ 3723.158101] br0: port 1(dummy0) entered blocking state
[ 3723.158115] br0: port 1(dummy0) entered forwarding state
[ 3723.437341] br0: port 1(dummy0) entered disabled state
[ 3723.559763] device dummy0 left promiscuous mode
[ 3723.559808] br0: port 1(dummy0) entered disabled state