
Forcibly restarting NSCD is unnecessary and breaks setups that use SSSD for authentication. NSCD is capable of detecting changes to /etc/resolv.conf and invalidating its caches internally. Restarting NSCD/SSSD breaks user name and UID resolution.
*** NixOS *** NixOS is a Linux distribution based on the purely functional package management system Nix. More information can be found at http://nixos.org/nixos and in the manual in doc/manual.