anchor.diff:  { stdenv, fetchurl, pkgconfig, libxml2, gnutls, devicemapper, perl, python
   , iproute, iptables, readline, lvm2, utillinux, udev, libpciaccess, gettext
   , libtasn1, ebtables, libgcrypt, yajl, makeWrapper, pmutils, libcap_ng
  -, dnsmasq
  +, dnsmasq, libnl
   }:
   
   let version = "1.2.2"; in
  
positive.code:   buildInputs = [
      pkgconfig libxml2 gnutls devicemapper perl python readline lvm2
      utillinux udev libpciaccess gettext libtasn1 libgcrypt yajl makeWrapper
      libcap_ng
    ];
  
    preConfigure = ''
  
negative.code:     "--localstatedir=/var"
      "--sysconfdir=/etc"
      "--with-init-script=redhat"
      "--with-macvtap"
      "--with-virtualport"
    ];
  
    installFlags = [
  