log.trace("No match for domain based root, checking standalone " + domain);
        }
        /*
         * We did not match a domain based root. Now try to match the
         * longest path in the list of stand-alone referrals.
         */

        CacheEntry<DfsReferralDataInternal> refs;
        synchronized ( this.referralsLock ) {
            refs = this.referrals;
            if ( refs == null || now > refs.expiration ) {