/**
* parse IPV6 ARPA domain to IP bytes.
*
* @param name an ARPA string.
* @return ARPA.
*/
private static NetworkInBytes parseIpV6Arpa(String name) {
LOGGER.debug("parseIp6Arpa, name:" + name);
String arpa = StringUtils.removeEndIgnoreCase(name, CHAR_DOT + DomainUtil.IPV6_ARPA_SUFFIX);
arpa = StringUtils.remove(arpa, CHAR_DOT);
String ip = StringUtils.reverse(arpa);
String fullIp = StringUtils.rightPad(ip, 32, '0');
byte[] startIpBytes = DatatypeConverter.parseHexBinary(fullIp);
int networkMask = StringUtils.length(arpa) * 4;
IPv6Address fromByteArray = IPv6Address.fromByteArray(startIpBytes);
IPv6Network network =
IPv6Network.fromAddressAndMask(
fromByteArray, IPv6NetworkMask.fromPrefixLength(networkMask));
NetworkInBytes result =
new NetworkInBytes(
IpVersion.V6, network.getFirst().toByteArray(), network.getLast().toByteArray());
return result;
}
