diff --git a/TODO b/TODO
index dbd5b10839..29ccde88a2 100644
--- a/TODO
+++ b/TODO
@@ -6,6 +6,8 @@ Bugfixes:
   manager or system manager can be always set. It would be better to reject
   them when parsing config.
 
+* Clarify what IPAddress* matches (source, destination, both?)
+
 External:
 
 * Fedora: add an rpmlint check that verifies that all unit files in the RPM are listed in %systemd_post macros.