diff --git a/v3-calico/README.md b/v3-calico/README.md
index 78b6278..6fce4c6 100644
--- a/v3-calico/README.md
+++ b/v3-calico/README.md
@@ -66,3 +66,21 @@ alias calicoctl="kubectl exec -i -n kube-system calicoctl -- /calicoctl"
 ```
 calicoctl create -f - < bgp....yaml
 ```
+
+## Setup a test deployment
+
+Do *NOT* use https://k8s.io/examples/application/deployment.yaml. It
+contains an outdated nginx container that has no IPv6 listener. You
+will get results such as
+
+```
+[19:03] server47.place7:~/ungleich-k8s/v3-calico#  curl http://[2a0a:e5c0:13:bbb:176b:eaa6:6d47:1c41]
+curl: (7) Failed to connect to 2a0a:e5c0:13:bbb:176b:eaa6:6d47:1c41 port 80: Connection refused
+```
+
+if you use that deployment. Instead use something on the line of the
+included **nginx-test-deployment.yaml**:
+
+```
+kubectl appply -f nginx-test-deployment.yaml
+```
diff --git a/v3-calico/nginx-test-deployment.yaml b/v3-calico/nginx-test-deployment.yaml
new file mode 100644
index 0000000..af12278
--- /dev/null
+++ b/v3-calico/nginx-test-deployment.yaml
@@ -0,0 +1,19 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+spec:
+  selector:
+    matchLabels:
+      app: nginx
+  replicas: 2 # tells deployment to run 2 pods matching the template
+  template:
+    metadata:
+      labels:
+        app: nginx
+    spec:
+      containers:
+      - name: nginx
+        image: nginx:1.20.0-alpine
+        ports:
+        - containerPort: 80