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