Varnish - remove Vary: User-Agent header

gistfile1.txt

// ADD TO YOUR VCL FILE

sub vcl_fetch {
    if (beresp.http.Vary ~ "User-Agent") {
        set beresp.http.Vary = regsub(req.http.Vary, ",? *User-Agent *", "");
        set beresp.http.Vary = regsub(req.http.Vary, "^, *", "");
        if (beresp.http.Vary == "") {
            remove beresp.http.Vary;
        }
    }
    if (beresp.ttl <= 0s ||
        beresp.http.Set-Cookie ||
        beresp.http.Vary == "*") {
            /*
             * Mark as "Hit-For-Pass" for the next 2 minutes
             */
            set beresp.ttl = 120 s;
            return (hit_for_pass);
    }
    return (deliver);
 }

Thies doesn't work in newer varnish versions because req.http is no longer available in vcl_backend_response