diff --git a/k8s-v6-v4-dns.dot b/k8s-v6-v4-dns.dot
new file mode 100644
index 0000000..1c1c836
--- /dev/null
+++ b/k8s-v6-v4-dns.dot
@@ -0,0 +1,24 @@
+digraph G {
+    node [ shape=box ]
+    #rankdir=LR;
+
+    label="k8s: IPv6 vs. IPv4 DNS service"
+
+    subgraph cluster_ipv4 {
+             label="IPv4"
+             serverv4 [ label="DNS server" ]
+             kubev4 [ label="kube-dns Service (IPv4, RFC1918)" ]
+             magicbox [ label="Magic Box\nTunnel, VPN, etc." ] ;
+    }
+    subgraph cluster_ipv6 {
+             label="IPv6"
+
+             serverv6 [ label="DNS server" ]
+             kubev6 [ label="kube-dns Service (IPv6)" ]
+    }
+
+    serverv4->magicbox
+    magicbox->kubev4
+    serverv6->kubev6
+
+}