nixos/slimserver: allow only ipv4 (#465619)

        User = "slimserver";

        # Issue 40589: Disable broken image/video support (audio still works!)

        ExecStart = "${lib.getExe cfg.package} --logdir ${cfg.dataDir}/logs --prefsdir ${cfg.dataDir}/prefs --cachedir ${cfg.dataDir}/cache --noimage --novideo";

        # Allow only IPv4 since slimserver breaks with IPv6

        RestrictAddressFamilies = [

          "AF_INET"

          "AF_UNIX"

        ];

      };

    };