anchor.diff:  
   # blacklist of specific IP addresses that we have found to abuse our policies:
   acl unwanted {
  +  # Not sure (sorry):
     "68.180.228.106";
  +  # Not sure (sorry):
     "98.174.196.0"/24;
  +  # China:
     "180.76.15.0"/24;
  +  # Not sure (sorry):
     "144.76.195.74";
  +  # Russian (St Petersburg) spambots, attempt to post comments over and over:
  +  "46.161.9.32";
  +  "46.161.9.24";
  +  "46.161.9.31";
   }
   
   ##### Directors
  
positive.code:     }
    }
  # Search Bots:
    if (req.http.user-agent ~ "Googlebot" ||
        req.http.user-agent ~ "Googlebot-Mobile" ||
        req.http.user-agent ~ "Googlebot-Image" ||
        req.http.user-agent ~ "rogerbot" ||
  
negative.code:       req.http.user-agent ~ "Smithsonian-Public-GSA" ||
        req.http.user-agent ~ "PaperLiBot") {
          set req.backend = searchbots;
    } elseif (req.url ~ "/varnishboom" ) {
      return(error);
  # API requests:
  