{ stdenv, fetchurl, libpcap, enableStatic ? false }: stdenv.mkDerivation rec { name = "tcpdump-4.5.1"; src = fetchurl { url = "http://www.tcpdump.org/release/${name}.tar.gz"; sha256 = "15hb7zkzd66nag102qbv100hcnf7frglbkylmr8adwr8f5jkkaql"; }; buildInputs = [ libpcap ]; crossAttrs = { LDFLAGS = if enableStatic then "-static" else ""; configureFlags = [ "ac_cv_linux_vers=2" ] ++ (stdenv.lib.optional (stdenv.cross.platform.kernelMajor == "2.4") "--disable-ipv6"); }; meta = { description = "tcpdump, a famous network sniffer"; homepage = http://www.tcpdump.org/; license = "BSD-style"; }; }