[ 1707.684641] br0: port 1(dummy0) entered blocking state
[ 1707.684690] br0: port 1(dummy0) entered disabled state
[ 1707.684723] dummy0: entered allmulticast mode
[ 1707.684787] dummy0: entered promiscuous mode
[ 1707.687650] br0: port 1(dummy0) entered blocking state
[ 1707.687715] br0: port 1(dummy0) entered forwarding state
[ 1707.891773] dummy0: left allmulticast mode
[ 1707.891805] dummy0: left promiscuous mode
[ 1707.891831] br0: port 1(dummy0) entered disabled state