diff --git a/todo/nmap.txt b/todo/nmap.txt
index 0812f057f..2bfa6624b 100644
--- a/todo/nmap.txt
+++ b/todo/nmap.txt
@@ -79,7 +79,9 @@ o Summer of Code feature creeper:
       Nmap TODO item).
     o Nmap should defer address parsing in arguments until it has read
       through all the args.  Otherwise you get an error if you use like -S
-      with an IPv6 address before you put -6 in the command line.
+      with an IPv6 address before you put -6 in the command line.  You
+      get a similar problem (on David's IPv6 branch) if you do "-A -6"
+     (but "-6 -A works properly).
 
 o [Nsock] Some SSL connections that used to work now fail; find out
   why. http://seclists.org/nmap-dev/2010/q4/788. Narrowed down to