I agree. I remember learning about DNS when I was a teenager. And I've been running my own authoritative DNS servers for almost 30 years now. Remember the O'Rei

I agree. I remember learning about DNS when I was a teenager. And I've been running my own authoritative DNS servers for almost 30 years now. Remember the O'Reilly book, "DNS and BIND" ? It's still out, those this would've been first edition, around 1993.