anchor.diff:        nat-traverse works out-of-the-box.
       '';
       homepage = https://www.speicherleck.de/iblech/nat-traverse/;
  -    license = stdenv.lib.licenses.gpl3Plus;
  -    platforms = stdenv.lib.platforms.all;
  +    license = licenses.gpl3Plus;
  +    platforms = platforms.all;
       maintainers = [ maintainers.iblech ];
     };
   }
  
positive.code:     sha256 = "0knwnqsjwv7sa5wjb863ghabs7s269a73qwkmxpsbngjw9s0j2ih";
    };
  
    buildInputs = [ makeWrapper ];
  
    installPhase = ''
      mkdir -p $out/bin $out/share/man/man1
      cp nat-traverse $out/bin
      gzip -c nat-traverse.1 > $out/share/man/man1/nat-traverse.1.gz
      wrapProgram $out/bin/nat-traverse --prefix PATH : "${stdenv.lib.makeBinPath [ perl ]}"
    '';
  
    meta = with stdenv.lib; {
  
negative.code: { stdenv, fetchurl, perl }:
  
  stdenv.mkDerivation rec {
    name = "nat-traverse-${version}";
  