anchor.diff:  d-i     console-setup/ask_detect        boolean false
   d-i     console-setup/layoutcode        string us
   d-i     console-setup/variantcode       string
  -d-i     netcfg/get_nameservers  string
  +d-i     netcfg/get_nameservers  string 192.168.66.1
   d-i     netcfg/get_ipaddress    string
   d-i     netcfg/get_netmask      string 255.255.255.0
   d-i     netcfg/get_gateway      string
  
positive.code: d-i     debian-installer/exit/halt      boolean false
  d-i     debian-installer/exit/poweroff  boolean false
  d-i     pkgsel/include string byobu vim openssh-server
  
negative.code: d-i     mirror/country string manual
  d-i     mirror/http/hostname string gb.archive.ubuntu.com
  d-i     mirror/http/directory string /ubuntu
  d-i     mirror/http/proxy string http://192.168.66.1:3142
  d-i     mirror/http/mirror string gb.archive.ubuntu.com
  d-i     mirror/codename string trusty
  d-i     mirror/suite string trusty
  