[ 1683.321687] br0: port 1(dummy0) entered blocking state
[ 1683.321727] br0: port 1(dummy0) entered disabled state
[ 1683.321763] dummy0: entered allmulticast mode
[ 1683.321812] dummy0: entered promiscuous mode
[ 1683.324525] br0: port 1(dummy0) entered blocking state
[ 1683.324586] br0: port 1(dummy0) entered forwarding state
[ 1683.501573] dummy0: left allmulticast mode
[ 1683.501602] dummy0: left promiscuous mode
[ 1683.501630] br0: port 1(dummy0) entered disabled state