anchor.diff:      if(!client.ip ~ purge_acl) {
         error 405 "Not allowed";
       } else {
  -<% if varnish_version == 2 %>
  +<% if @varnish_version == 2 %>
         purge("req.url == " req.url);
   <% else %>
         ban("req.url == " + req.url);
  
positive.code:   unset beresp.http.X-Rack-Cache;
    unset beresp.http.X-Runtime;
  
  <% if varnish_version == 2 %>
    if (beresp.cacheable) {
  <% else %>
    if (beresp.ttl > 0s) {
  
negative.code: }
  
  sub vcl_hash {
  <% if @varnish_version == 2 %>
    set req.hash += req.url;
  <% else %>
    hash_data(req.url);
  