fix

modules/nixos/system/networking/default.nix

@@ -1,6 +1,6 @@
 { config, lib, pkgs, namespace, ... }:
 let
-  inherit (lib) types mkIf mkDefault mkOption mkEnableOption;
+  inherit (lib) types mkIf mkForce mkOption mkEnableOption;
   inherit (lib.${namespace}) mkBoolOpt enabled;
 
   cfg = config.${namespace}.system.networking;
@@ -53,7 +53,7 @@ in
 
     networking = {
       firewall = enabled;
-      useDHCP = (cfg.useDHCP && cfg.useStatic == null);
+      useDHCP = mkForce (cfg.useDHCP && cfg.useStatic == null);
       useNetworkd = cfg.useNetworkd;
     } // (lib.optionalAttrs (cfg.enableIWD) {
       wireless.iwd = {