base/network.nix: change enableStubResolver opt to enableStubListener

base/network.nix

@@ -69,11 +69,11 @@ in {
       example = "resolve";
     };
 
-    enableStubResolver = mkOption {
-      type = types.bool;
-      default = false;
+    enableStubListener = mkOption {
+      type = types.str;
+      default = "false";
       description = "Enable DNS stub resolver";
-      example = true;
+      example = "udp";
     };
 
     timeServers = mkOption {
@@ -136,7 +136,7 @@ in {
       domains = [ "~." ];
       extraConfig = ''
         MulticastDNS=${cfg.enableMDNS}
-        DNSStubResolver=${if cfg.enableStubResolver then "true" else "false"}
+        DNSStubListener=${cfg.enableStubListener}
       '';
       dnsovertls = "false";
     };