[dhcwg] Comments on draft-ietf-dhc-dhcpv6-lwm2m-bootstrap-options-00

"Bernie Volz (volz)" <volz@cisco.com> Wed, 15 November 2017 01:55 UTC

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From: "Bernie Volz (volz)" <volz@cisco.com>
To: "draft-ietf-dhc-dhcpv6-lwm2m-bootstrap-options@ietf.org" <draft-ietf-dhc-dhcpv6-lwm2m-bootstrap-options@ietf.org>
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Thread-Topic: Comments on draft-ietf-dhc-dhcpv6-lwm2m-bootstrap-options-00
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Date: Wed, 15 Nov 2017 01:55:10 +0000
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Subject: [dhcwg] Comments on draft-ietf-dhc-dhcpv6-lwm2m-bootstrap-options-00
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I have comments on this draft and most apply to your other draft, draft-nalluri-dhc-dhcpv6-mqtt-config-options. These are mostly nits.

  1.  The title says “DHCPv6 options”, but the document includes both v4 + v6. Perhaps just say “DHCP options”? Or?
  2.  Section 5.1 lists that options can be in Reconfigure ORO. While technically correct, the 3315BIS document deprecates use of ORO in Reconfigure. Thus, depending on when this document and 3315bis comes out, it might be something to reconsidering referencing? But perhaps best to wait to see what happens.
  3.  Section 5.2 states:

   Maximum possible value of DHCPv4 "option-len" is 255.  LWM2M-server-

   certificate MAY be of length more than 255.  To accommodate larger

   certificate, DHCP server SHOULD follow encoding as mentioned in


                But, clients must also support RFC 3396 – not just the server.

  1.  You might consider different names for the options as otherwise easy for IANA or others to confused the assigned option numbers (when assigned)? Perhaps use OPTION and OPTION6 prefixes?
  2.  Section 6 has some missing periods at end of sentences.
  3.  Section 7 perhaps change “DHCP” to “DHCPv4”? Perhaps considering using DHCPv4 or DHCPv6 when referring to specific version, “DHCP” for either?
  4.  Section 9 – RFC3315bis has dropped the Delayed Authentication Protocol so it may not be a good idea to references / mention this? You may want to look at RFC3315bis security sections for some text or just point to it? Though trust issues with the URL provided are certainly something to consider.

  *   Bernie