zone "olegoff.net" {
        type master;
        file "master/olegoff.net";
        update-policy {
            grant uolegoff-key name _acme-challenge.olegoff.net. TXT;
        };
};

$ORIGIN olegoff.net.
$TTL 120        ; 2 minutes
_acme-challenge         TXT     "BPIiXKxg7X8IftVucUmHZiYWwUGGgKhNriWl15hfcXM"
                        TXT     "oIBZeOoRrGHfrCYojWxfBY4j0Xt2dveLj8vJ3miwd6c"