diff --git a/napalm_fritzbox/fritzbox.py b/napalm_fritzbox/fritzbox.py
index 1b87ae9..334b08b 100644
--- a/napalm_fritzbox/fritzbox.py
+++ b/napalm_fritzbox/fritzbox.py
@@ -175,7 +175,7 @@ class FritzBoxDriver(ResidentialGatewayDriver):
             return self._call(service, "X_AVM-DE_GetExternalIPv6Address").get(
                 "NewExternalIPv6Address", ""
             )
-        except Exception:
+        except _OPTIONAL_SERVICE_ERRORS:
             return ""
 
     # ------------------------------------------------------------------