{ stdenv, fetchurl, flex, bison }: stdenv.mkDerivation rec { name = "libpcap-1.0.0"; src = fetchurl { url = "http://www.tcpdump.org/release/${name}.tar.gz"; sha256 = "1h3kmj485qz1i08xs4sc3a0bmhs1rvq0h7gycs7paap2szhw8552"; }; buildInputs = [ flex bison ]; configureFlags = "--with-pcap=linux"; preInstall = ''ensureDir $out/bin''; patches = [ ./libpcap_amd64.patch ]; }