Yeah, default Ubuntu LTS webserver kicked the mysqld on a stupid query (but it worked on dev - all developers, someday) not too long ago…

Gotcha ✔️

They can’t cross any other tracks/roads. I.e. everything else must go above/below it.

Yup, I second NextDNS. It works perfectly, and the free tier is enough for my mobile, wife’s mobile and my desktop. AdGuard is included, as are dozens of other (selectable) lists.