[dhcwg] Valid values for DHCPv6 option 18 (Interface ID)

Andre Kostur <akostur@incognito.com> Wed, 12 March 2014 00:10 UTC

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From: Andre Kostur <akostur@incognito.com>
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Subject: [dhcwg] Valid values for DHCPv6 option 18 (Interface ID)
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Has there been any changes as to how option 18 has been defined by us?
 I'm running into certain programs (Wireshark, in particular) and
devices that appear to be doing both:
- Assuming it's printable
- Interpreting the content

Both appear to be strongly discouraged by 3315:

   The Interface-ID SHOULD be considered an opaque value, with policies
   based on exact match only; that is, the Interface-ID SHOULD NOT be
   internally parsed by the server.

According to my interpretation, that says that one should neither be
attempting to interpret the contents, nor try to display it as a


Andre Kostur