That was my understanding also. It is their land. It was uninhabited (except for a few wandering bushmen). The Boers developed the land, and then all the illegal immigrants from the Lake Victoria region swarmed in.
Of course, since it is Africa, melanin challenged people need not apply.
Afrikaners are true Africans, just white. They created the most productive nation on the African Continent. Unfortunately, SA is now rapidly going the way of Zimbabwe.