diff --git a/routlin/install.py b/routlin/install.py
index 0e0061a..093bc69 100644
--- a/routlin/install.py
+++ b/routlin/install.py
@@ -374,6 +374,13 @@ def install_caddy(pm):
         die("Caddy required for external access.")
 
 
+def _external_access_domain():
+    """Return the configured domain if a Routlin Caddy block exists, else None."""
+    if not CADDYFILE.exists():
+        return None
+    m = re.search(rf'(\S+)\s*\{{[^}}]*127\.0\.0\.1:{FLASK_PORT}', CADDYFILE.read_text(), re.DOTALL)
+    return m.group(1) if m else None
+
 def setup_caddy(domain, email):
     block = (
         f"\n# Routlin Dashboard\n"
@@ -496,6 +503,14 @@ def main():
 
     # -- External access -------------------------------------------
     header("External Access (optional)")
+    ext_domain = _external_access_domain()
+    if ext_domain:
+        print(f"  External access to the web dashboard is already configured.")
+        print(f"    https://{ext_domain}/")
+        print()
+        print("Done.")
+        return
+
     print("  External access lets you reach the dashboard from outside")
     print("  your LAN via HTTPS using a domain name and Caddy.")
     print()