From 03d14106626c45003eb24681e4df57270eb5dcee Mon Sep 17 00:00:00 2001
From: Nico Schottelius <nico@nico-notebook.schottelius.org>
Date: Tue, 7 Dec 2021 12:25:56 +0100
Subject: [PATCH] ++k8s proxies

---
 k8s-ipv4-http-proxy.dot | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 k8s-ipv4-http-proxy.dot

diff --git a/k8s-ipv4-http-proxy.dot b/k8s-ipv4-http-proxy.dot
new file mode 100644
index 0000000..09407eb
--- /dev/null
+++ b/k8s-ipv4-http-proxy.dot
@@ -0,0 +1,33 @@
+digraph G {
+    node [ shape=box ]
+    #rankdir=LR;
+
+    label="k8s: IPv4 Proxy in IPv6 only k8s"
+
+#    subgraph cluster_internet {
+#             label="Internet"
+             clientv4 [ label="IPv4 Client" ]
+             clientv6 [ label="IPv6 Client" ]
+#    }
+
+    subgraph cluster_router {
+             label="Routing Infrastructure"
+
+             routerv4 [ label="Router with NAT64/SIIT" ]
+             routerv6 [ label="IPv6-Router" ]
+    }
+
+    subgraph cluster_ipv6 {
+             label="kubernetes:\nIPv6 only pods"
+
+             endpointv6 [ label="Application (IPv6 only)" ]
+             haproxyv6 [ label="HAProxy (IPv6 only)" ]
+    }
+
+    clientv4->routerv4 [ label="HTTP Request to 192.0.2.1" ]
+    routerv4->haproxyv6 [ label="NAT64 translation\nTo IPv6" ]
+    haproxyv6->endpointv6 [ label="IPv6 forward\nDomain whitelist" ]
+
+    clientv6->routerv6 [ label="HTTP Request to 2001:db8:..." ]
+    routerv6->endpointv6 [ label="Regular forward" ]
+}