public String toString() {

      StringBuffer sb = new StringBuffer("Addrs ");

      sb.append(
          (value.length == 16)
              ? ("[" + ServerAcl.colonNotation(value) + ']')
              : ServerAcl.dottedNotation(value));
      sb.append("/" + bitBlockSize + ' ' + (allow ? "ALLOW" : "DENY"));

      return sb.toString();
    }