case RESOLVER_DNS:
                    if (isAllDigits(hostname)) {
                        throw new UnknownHostException(hostname);
                    }
                    final UniAddress[] addrs = wrapInetAddresses(InetAddress.getAllByName(hostname));
                    if (log.isDebugEnabled()) {
                        log.debug("Resolved '{}' to {} using DNS", hostname, Arrays.toString(addrs));
                    }