Appendix C. Appearance of Options in the "options" Field of DHCP Options

下表使用 "*" 指示本文档定义的 options 可以作为顶层 options 出现的位置, 或可以封装在本文档定义的其他 options 中的位置. 其他 RFC 可能定义本文档中 options 被封装在其他 options 中的额外情形.

该表仅供参考. 如果它与本文档前文文本冲突, 应以前文文本为准.

   +============+=====+=====+======+=====+==========+========+========+
   |            |Top- |IA_NA|IAADDR|IA_PD| IAPREFIX | RELAY- | RELAY- |
   |            |Level|     |      |     |          | FORW   | REPL   |
   +============+=====+=====+======+=====+==========+========+========+
   | Client ID  |  *  |     |      |     |          |        |        |
   +============+-----+-----+------+-----+----------+--------+--------+
   | Server ID  |  *  |     |      |     |          |        |        |
   +============+-----+-----+------+-----+----------+--------+--------+
   | IA_NA      |  *  |     |      |     |          |        |        |
   +============+-----+-----+------+-----+----------+--------+--------+
   | IAADDR     |     |  *  |      |     |          |        |        |
   +============+-----+-----+------+-----+----------+--------+--------+
   | IA_PD      |  *  |     |      |     |          |        |        |
   +============+-----+-----+------+-----+----------+--------+--------+
   | IAPREFIX   |     |     |      |  *  |          |        |        |
   +============+-----+-----+------+-----+----------+--------+--------+
   | ORO        |  *  |     |      |     |          |        |        |
   +============+-----+-----+------+-----+----------+--------+--------+
   | Preference |  *  |     |      |     |          |        |        |
   +============+-----+-----+------+-----+----------+--------+--------+
   | Elapsed    |  *  |     |      |     |          |        |        |
   | Time       |     |     |      |     |          |        |        |
   +============+-----+-----+------+-----+----------+--------+--------+
   | Relay      |     |     |      |     |          |   *    |   *    |
   | Message    |     |     |      |     |          |        |        |
   +============+-----+-----+------+-----+----------+--------+--------+
   | Authentic. |  *  |     |      |     |          |        |        |
   +============+-----+-----+------+-----+----------+--------+--------+
   | Status     |  *  |  *  |      |  *  |          |        |        |
   | Code       |     |     |      |     |          |        |        |
   +============+-----+-----+------+-----+----------+--------+--------+
   | Rapid      |  *  |     |      |     |          |        |        |
   | Comm.      |     |     |      |     |          |        |        |
   +============+-----+-----+------+-----+----------+--------+--------+
   | User Class |  *  |     |      |     |          |        |        |
   +============+-----+-----+------+-----+----------+--------+--------+
   | Vendor     |  *  |     |      |     |          |        |        |
   | Class      |     |     |      |     |          |        |        |
   +============+-----+-----+------+-----+----------+--------+--------+
   | Vendor     |  *  |     |      |     |          |   *    |   *    |
   | Info.      |     |     |      |     |          |        |        |
   +============+-----+-----+------+-----+----------+--------+--------+
   | Interf.    |     |     |      |     |          |   *    |   *    |
   | ID         |     |     |      |     |          |        |        |
   +============+-----+-----+------+-----+----------+--------+--------+
   | Reconf.    |  *  |     |      |     |          |        |        |
   | MSG.       |     |     |      |     |          |        |        |
   +============+-----+-----+------+-----+----------+--------+--------+
   | Reconf.    |  *  |     |      |     |          |        |        |
   | Accept     |     |     |      |     |          |        |        |
   +============+-----+-----+------+-----+----------+--------+--------+
   | Info       |  *  |     |      |     |          |        |        |
   | Refresh    |     |     |      |     |          |        |        |
   | Time       |     |     |      |     |          |        |        |
   +============+-----+-----+------+-----+----------+--------+--------+
   | SOL_MAX_RT |  *  |     |      |     |          |        |        |
   +============+-----+-----+------+-----+----------+--------+--------+
   | INF_MAX_RT |  *  |     |      |     |          |        |        |
   +============+-----+-----+------+-----+----------+--------+--------+

表 7: Options 的出现情况

注: "Top-Level" 列中标有星号的 options 出现在客户端消息的 "options" 字段中 (见第 8 节). "RELAY-FORW" 和 "RELAY-REPL" 列中标有星号的 options 出现在 Relay-forward 和 Relay-reply 消息的 "options" 字段中 (见第 9 节).