diff --git a/doc/TODO b/doc/TODO
index 0f844dd0ec..4328975de4 100644
--- a/doc/TODO
+++ b/doc/TODO
@@ -106,6 +106,10 @@ R - clients prefer to avoid exit nodes for non-exit path positions.
 
 Deferred from 0.1.1.x:
 
+  - Automatically determine what ports are reachable and start using
+    those, if circuits aren't working and it's a pattern we recognize
+    ("port 443 worked once and port 9001 keeps not working").
+
 N . Additional controller features
       o Find a way to make event info more extensible
       - change circuit status events to give more details, like purpose,