[ 1740.718229] br0: port 1(dummy0) entered blocking state
[ 1740.718273] br0: port 1(dummy0) entered disabled state
[ 1740.718311] dummy0: entered allmulticast mode
[ 1740.718371] dummy0: entered promiscuous mode
[ 1740.721976] br0: port 1(dummy0) entered blocking state
[ 1740.722013] br0: port 1(dummy0) entered forwarding state
[ 1740.976015] dummy0: left allmulticast mode
[ 1740.976055] dummy0: left promiscuous mode
[ 1740.976151] br0: port 1(dummy0) entered disabled state