diff --git a/TODO b/TODO
index e05317d16f..e5ba3d284a 100644
--- a/TODO
+++ b/TODO
@@ -708,6 +708,7 @@ Features:
      then remove remove libkmod dependency and CAP_SYS_MODULE
    - add veth netdev support (c.f. http://shorewall.net/bridge-Shorewall-perl.html#veth)
    - add tun/tap netdev support
+   - add more attribute support for SIT tunnel
 
 * networkd-wait-online:
    - make operstates to wait for configurable?