}
        final SmbTransportImpl transport = getReferralTransport(tf, getDcReferrals(tf, domain));
        if (transport == null && log.isDebugEnabled()) {
            log.debug(String.format("Failed to connect to domain controller for %s", domain));
        }
        return transport;
    }

    private static SmbTransportImpl getReferralTransport(final CIFSContext tf, DfsReferralData dr) throws SmbAuthException {