All my boys are around 30 now and all with good White women. (Although they are all a bit sensitive and kinda liberal.) I have sat all my boys down and had serious discussions about this exact topic, they all have daughters now. I had my DNA tested under a pseudonym and my lineage is 100% central and NE European. No a single drop of anything else, I am as white as you can get. I explained to them that these are the genes they carry. Their mother is also extremely White. I told them as best I can, "Don't let your daughters date outside their race. Any miscegenation destroys that bloodline for all of her descendants. Nothing I can do about it but hope they raise them right.