Over the last several years, systemd has steadily absorbed an increasing number of Linux functions that were previously simple config files and/or binaries. I honestly don’t have a strong opinion on systemd but it does make certain system admin-y tasks more complicated. One of the things that I reguarly run into is that systemd-resolved runs a “stub” DNS server that binds on 127.0.0.53:53 and takes over /etc/resolv.conf. Rather than being a text file, /etc/resolv.