@lanodan @mia iirc on some distros this is the default moreso because DNS resolution on Linux isn't determined by what network you're connecting to (like it is on Windows/Mac), but is instead just handled by a simple resolv.conf file.

If you're not using systemd (which messes with resolv.conf via NetworkManager) its usually easier to shoe in dnsmasq and rely on it instead for something more advanced than "set an IP and forget".