And if substantial documentation were the only thing that kept networks from security and absolute anarchy, then all of the internet would be lost.
It's not documentation, nor is it absolute knowledge that brings someone to understand a sane amount of security. But also trial and error.
One of the most important first rules of security is, start testing in applications that pose the least amount of risk.
If you're looking into hosting your own DNS server, you've already proven you understand a lot more than the average user does about networking in general.
You do have two DNS options on most devices.
A Primary and a Secondary. If you're worried about your primary's stability/reliability, put a different dns as your secondary that you trust.
learning linux is a process, but it's way easier now than it used to be.
It's more of an easy to learn hard to master situation today as compared to the old "heres a box of source, compile it and hope it works, lmao" in the days of yore.
casusally skipping millenium edition because most people opted to buy windows 2000, the enterprise server os instead.
Windows 2000 couldn't run games because it was based on Windows NT and the NT Kernel. ME was still based on DOS.
XP frankensteined the NT Kernel and DOS to somehow make the most stable, longest running and best windows ever.
I guess that's an L for crime-coefficients.