> Debian, Ubuntu and the vast majority of their derivatives use systemd. Debian doesn't use nss-resolve(8) by default though. I'd be very surprised if RHEL or

> Debian, Ubuntu and the vast majority of their derivatives use systemd. Debian doesn't use nss-resolve(8) by default though. I'd be very surprised if RHEL or any other other distros suitable for a "production environment" were to take that step given systemd-resolved's current level of maturity. (This is not a knock at systemd-resolved; I use it myself on most of my machines, but unless you want to spend a lot of time debugging weird resolver issues I would not recommend doing so until it has matured a bit more.