[dhcwg] RE: draft-jang-dhc-haopt-00.txt

"Bernie Volz" <volz@cisco.com> Tue, 03 August 2004 05:43 UTC

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From: "Bernie Volz" <volz@cisco.com>
To: <heejin.jang@samsung.com>, <alper.yegin@samsung.com>, <athene@sait.samsung.co.kr>
Date: Tue, 3 Aug 2004 01:33:37 -0400
Organization: Cisco
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Cc: "'DHC WG \(E-mail\)'" <dhcwg@ietf.org>
Subject: [dhcwg] RE: draft-jang-dhc-haopt-00.txt
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Hi. In preparing for the DHC WG meeting I have the following comments on
draft-jang-dhc-haopt-00.txt:

In DHCPv6 we use 16-bit option (and suboption) codes and lengths. It would
be best if this draft switched to using 16-bit fields for the sub-option and
length fields. Please see RFC 3315 and section 22.17. Note also that for
some forms of identification/authentication (opaque type), it is conceivable
that it might exceed a length of 255 bytes!

Also, with a 16-bit option number space, we've got plenty of option number
space and it might be best to drop the Home Agent Discovery Option and
simply make the two sub-options regular options? Or, is there a reason you'd
prefer having sub-options?

For the Home Network Information Sub-option, I assume that if multiple
addresses (or prefixes) are specified, the A, reserved, prefix-length and
address/prefix fields are all repeated (18 bytes/address). It might be good
to specify this?

- Bernie


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