diff --git a/todo/nmap.txt b/todo/nmap.txt
index edd9df889..946e0ef00 100644
--- a/todo/nmap.txt
+++ b/todo/nmap.txt
@@ -25,6 +25,13 @@ o [NSE] Maybe we should create a class of scripts which only run one
     discovery, and then let the following phases work on the list it
     discovers."
 
+o Add a configure option to our libpcap which enables an older Linux
+  packet capture system (David's noring patch).  This is needed in
+  some cases for 32-bit static binaries to work on 64-bit Linux
+  systems.  Note that it is unneccessary if both the build system and
+  the target system use Linux 2.6.27, as that has an architecture
+  independent tpacket_hdr (called tpacket2_hdr).
+
 o [NSE] Write a couple more MSRPC scripts inspired by sysinternals:
   o Windows system logs (like sysinternals' psloglist)
   o Services (like sysinternals' psservice)