diff --git a/karldns/web/scripts.py b/karldns/web/scripts.py
index 319d41a..f716672 100644
--- a/karldns/web/scripts.py
+++ b/karldns/web/scripts.py
@@ -234,10 +234,48 @@ VISITOR_IP_JS = """
     replaceInCopyValues(search, replacement);
   };
 
+  const updateCopyCommand = (button, ipv6Command) => {
+    const value = button.dataset.copy || "";
+    if (!value || value.includes("?myipv6=")) return;
+    const lines = value.split("\\n");
+    const output = [];
+    let inserted = false;
+    lines.forEach((line) => {
+      output.push(line);
+      if (!inserted && line.includes("/api/v1/router/update/") && line.includes("?myip=")) {
+        output.push(ipv6Command);
+        inserted = true;
+      }
+    });
+    if (inserted) button.dataset.copy = output.join("\\n");
+  };
+
+  const insertIpv6Examples = (ip) => {
+    if (!ip) return;
+    document.querySelectorAll(".terminal-card.manual-code").forEach((card) => {
+      if (card.textContent.includes("?myipv6=")) return;
+      const lines = [...card.querySelectorAll("code")];
+      const ipv4Line = lines.find((line) => line.textContent.includes("/api/v1/router/update/") && line.textContent.includes("?myip="));
+      if (!ipv4Line) return;
+      const base = ipv4Line.textContent.split("?myip=", 1)[0].replace(/'$/, "");
+      const ipv6Command = `${base}?myipv6=${ip}'`;
+      const code = document.createElement("code");
+      code.textContent = ipv6Command;
+      ipv4Line.after(code);
+      const copyButton = card.querySelector("[data-copy]");
+      if (copyButton) updateCopyCommand(copyButton, ipv6Command);
+    });
+  };
+
   document.addEventListener("DOMContentLoaded", async () => {
     const tasks = [];
     if (needsIpv4()) tasks.push(fetchIp("https://api4.ipify.org?format=json").then((ip) => replaceEverywhere(ipv4Placeholder, ip)));
-    if (needsIpv6()) tasks.push(fetchIp("https://api6.ipify.org?format=json").then((ip) => replaceEverywhere(ipv6Placeholder, ip)));
+    if (needsIpv6() || document.querySelector(".terminal-card.manual-code")) {
+      tasks.push(fetchIp("https://api6.ipify.org?format=json").then((ip) => {
+        replaceEverywhere(ipv6Placeholder, ip);
+        insertIpv6Examples(ip);
+      }));
+    }
     await Promise.allSettled(tasks);
   });
 })();
diff --git a/karldns/web/templates_management.py b/karldns/web/templates_management.py
index 25357c6..7470fda 100644
--- a/karldns/web/templates_management.py
+++ b/karldns/web/templates_management.py
@@ -210,7 +210,7 @@ def _render_pending_management_page(
               <div>
                 <h2>Manual updates.</h2>
                 <p class="section-copy">Scripts can send the IP explicitly, or omit it and let KarlDNS use the request IP. Visible examples use your public IP when KarlDNS or your browser can detect it.</p>
-                {_code_window(manual_commands, copy_label="manual update commands", class_name="mt-3")}
+                {_code_window(manual_commands, copy_label="manual update commands", class_name="manual-code mt-3")}
               </div>
               <div>
                 <h2>Use your own DNS name.</h2>
diff --git a/karldns/web/templates_public.py b/karldns/web/templates_public.py
index b4b8203..1f3a0a0 100644
--- a/karldns/web/templates_public.py
+++ b/karldns/web/templates_public.py
@@ -69,7 +69,7 @@ def _render_public_home(
             <div class="container narrow text-center">
               <h2>Update from a router or script.</h2>
               <p class="lead mx-auto mt-3">Works with FRITZ!Box, curl, cron, Home Assistant, OpenWrt, pfSense, OPNsense, UniFi, MikroTik, and custom tools.</p>
-              {_code_window(manual_demo, copy_label="manual update examples", class_name="text-start mt-4")}
+              {_code_window(manual_demo, copy_label="manual update examples", class_name="manual-code text-start mt-4")}
             </div>
           </section>
           {_linux_installer_section(base_url)}