Merge branch 'main' into ui-refactor

Port IPv6 overlay support (#5631) into the Wails UI:
- Add DisableIPv6 config toggle to Settings (NetworkTab + services)
- Filter ::/0 alongside 0.0.0.0/0 as an exit-node route
- Suppress duplicate v6 default-route notifications in tray

client/ui/frontend/src/pages/Networks.tsx

@@ -54,7 +54,10 @@ export default function Networks() {
   };
 
   const overlapping = useMemo(() => filterOverlapping(routes), [routes]);
-  const exitNodes = useMemo(() => routes.filter((r) => r.range === "0.0.0.0/0"), [routes]);
+  const exitNodes = useMemo(
+    () => routes.filter((r) => r.range === "0.0.0.0/0" || r.range === "::/0"),
+    [routes],
+  );
 
   return (
     <div className="flex h-full flex-col p-6">

client/ui/frontend/src/pages/Settings.tsx

@@ -68,6 +68,7 @@ export default function Settings() {
         disableClientRoutes: cfg.disableClientRoutes,
         disableServerRoutes: cfg.disableServerRoutes,
         disableDns: cfg.disableDns,
+        disableIpv6: cfg.disableIpv6,
         blockLanAccess: cfg.blockLanAccess,
         enableSshRoot: cfg.enableSshRoot,
         enableSshSftp: cfg.enableSshSftp,
@@ -182,6 +183,11 @@ function NetworkTab({ cfg, setField }: Ctx) {
         onChange={(v) => setField("disableServerRoutes", v)}
         label="Disable server routes"
       />
+      <Switch
+        checked={cfg.disableIpv6}
+        onChange={(v) => setField("disableIpv6", v)}
+        label="Disable IPv6 overlay addressing"
+      />
       <Switch
         checked={cfg.blockLanAccess}
         onChange={(v) => setField("blockLanAccess", v)}