more changes

internal/controller/resolver_controller.go

@@ -69,7 +69,6 @@ func (r *ResolverReconciler) Reconcile(ctx context.Context, req ctrl.Request) (c
 		return ctrl.Result{}, err
 	}
 
-	// TODO(user): your logic here
 	switch {
 	case len(resolver.Spec.IPAddress) == 0:
 		// IPAddress is not a valid IP
@@ -81,6 +80,17 @@ func (r *ResolverReconciler) Reconcile(ctx context.Context, req ctrl.Request) (c
 		// IP is IPv6
 	}
 
+	// exit loop here if port was provided
+	if resolver.Spec.Port != 0 {
+		return ctrl.Result{}, nil
+	}
+
+	// set defaults and patch it back to k8s
+	resolver.Spec.Port = 53
+	if err := r.Patch(ctx, &resolver, client.Merge); err != nil {
+		return ctrl.Result{}, err
+	}
+
 	return ctrl.Result{}, nil
 }