if (digit < 0) {
        return -1;
      }
      decimal += digit;
    }
    return decimal;
  }

  // Parse a hextet out of the ipString from start (inclusive) to end (exclusive)
  private static short parseHextet(String ipString, int start, int end) {
    // Note: we already verified that this string contains only hex digits.
    int length = end - start;

  It changes the dual-stack API wrt Service from a single ipFamily field to 3
  fields: ipFamilyPolicy (SingleStack, PreferDualStack, RequireDualStack),
  ipFamilies (a list of families assigned), and clusterIPs (inclusive of
  clusterIP).  Most users do not need to set anything at all, defaulting will
  handle it for them.  Services are single-stack unless the user asks for