In article <OF4B80623D.5199BFDE-ON65256D1B.004E06B8-80256D1B.0066D6FC@in.ibm.com>,
> what are the packages I need to download on AIX to compile
> netbsd-release-1.6 src code?

The NetBSD 1.6 source are self-contained. Just read this document to
learn how cross compiling works:

http://www.netbsd.org/Documentation/cross/

But if you really want to create a new port you should start with the
NetBSD-current sources which are available here:

ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-current/tar_files/src/

	Kind regards

-- 
Matthias Scheler                                  http://scheler.de/~matthias/