[ 1734.643905] br0: port 1(dummy0) entered blocking state
[ 1734.643953] br0: port 1(dummy0) entered disabled state
[ 1734.643993] dummy0: entered allmulticast mode
[ 1734.644040] dummy0: entered promiscuous mode
[ 1734.646791] br0: port 1(dummy0) entered blocking state
[ 1734.646855] br0: port 1(dummy0) entered forwarding state
[ 1734.837623] dummy0: left allmulticast mode
[ 1734.837658] dummy0: left promiscuous mode
[ 1734.837685] br0: port 1(dummy0) entered disabled state