Hello, nsat is currently not supported on amd64 and fails to build here, but this can be fixed with a simple patch. After some testing it looks like snat works well.
Created attachment 291843 [details] build.log This is how build fails on ~amd64.
Created attachment 291845 [details] build.log Sorry, previous build log was from another ebuild.
Created attachment 291847 [details] emerge --info
Created attachment 291849 [details, diff] nsat-1.5-64bit.patch Fix build on ~amd64.
+*nsat-1.5-r1 (25 Sep 2012) + + 25 Sep 2012; Sergey Popov <pinkbyte@gentoo.org> +nsat-1.5-r1.ebuild, + +files/nsat-1.5-amd64-compat.patch: + New revision with amd64 keyword and compatibility patch for it, wrt bug + #389767. Thanks to Andrew Savchenko for provided patch Program seems to work fine(scan and generate reports), but compilation output has long list of warnings