Bread vcl with banning and purging

default.vcl

backend tcutshortlist {
     .host = "tcut-shortlist.coad.me";
     .port = "8080";
}

backend tcutstylist {
     .host = "tcut-stylist.coad.me";
     .port = "8080";
}

backend coadme {
      .host = "coad.me";
      .port = "8080";
}


acl purgers {
        "127.0.0.1";
}

sub vcl_recv {
        if (req.request == "PURGE") {
                if (!client.ip ~ purgers) {
                        error 405 "Method not allowed";
                }
                return (lookup);
        }

        if (req.request == "BAN") {
                if (!client.ip ~ purgers) {
                        error 405 "Method not allowed";
                }
                ban_url(req.url);
                error 200 "Banned";
        }

        if (req.request != "GET" && req.request != "HEAD") {
                /* We only deal with GET and HEAD by default */
                return (pass);
        }

        if (req.http.host == "tcut-stylist.coad.me") {
                set req.backend = tcutstylist;
                return (lookup);
        }

        if (req.http.host == "tcut-shortlist.coad.me") {
                set req.backend = tcutshortlist;
                return (lookup);
        }
        if (req.http.host == "coad.me") {
                set req.backend = coadme;
                return (lookup);
        }

}

sub vcl_hit {
        if (req.request == "PURGE") {
                purge;
                error 200 "Purged";
        }
}

sub vcl_miss {
        if (req.request == "PURGE") { 
                purge;
                error 404 "Not in cache";
        }
}

sub vcl_pass {
        if (req.request == "PURGE") {
                error 502 "PURGE on a passed object";
        }
}

sub vcl_deliver {
        if (obj.hits > 0) {
                set resp.http.X-Cache = "HIT";
        } else {
                set resp.http.X-Cache = "MISS";
        }
}