My colo provider has planned maintenance tonight, so I took the opportunity to do what I have been meaning to do for forever; setup DNS at home as a primary for my domains with proper secondary mirroring.
Judging by the fediverse still working.. I seem to have been successful.
I did DNS (with DNSSEC, glue records, name server registration) right the first try? No. I messed something up.. I just don't know what it is yet.