[ 1805.703467] br0: port 1(dummy0) entered blocking state
[ 1805.703504] br0: port 1(dummy0) entered disabled state
[ 1805.703541] dummy0: entered allmulticast mode
[ 1805.703599] dummy0: entered promiscuous mode
[ 1805.706402] br0: port 1(dummy0) entered blocking state
[ 1805.706432] br0: port 1(dummy0) entered forwarding state
[ 1805.910692] dummy0: left allmulticast mode
[ 1805.910720] dummy0: left promiscuous mode
[ 1805.910751] br0: port 1(dummy0) entered disabled state