
This is necessary for Librespot, which is spawned by snapserver in the same cgroup. Librespot requires querying local ip links and addresses for MDNS (Zeroconf/Avahi), and does so through NETLINK interface.
*** NixOS *** NixOS is a Linux distribution based on the purely functional package management system Nix. More information can be found at https://nixos.org/nixos and in the manual in doc/manual.