quitte: use unbound

flake.nix

@@ -93,6 +93,7 @@
             ./modules/matrix
             ./modules/keycloak
             ./modules/monitoring
+            ./modules/unbound
 
             ./modules/nix-serve.nix
             ./modules/hedgedoc.nix

modules/unbound/default.nix

@@ -0,0 +1,17 @@
+{ ... }:
+{
+  services.unbound = {
+    enable = true;
+    settings = {
+      server = {
+        interface = [ "127.0.0.1" ];
+        access-control = [ "127.0.0.1 allow" ];
+      };
+      stub-zone = [
+        {
+          name = ".";
+        }
+      ];
+    };
+  };
+}