Help with DHCPv6 client-identifiers

[Bjørn Mork]

Rudy Zijlstra <rudy at grumpydevil.homelinux.org> writes:

> On 11/20/2011 05:09 PM, Bjørn Mork wrote:
>> Rudy Zijlstra<rudy at grumpydevil.homelinux.org>  writes:
>>> On 11/20/2011 04:29 PM, Ted Lemon wrote:
>>>
>>>> Yes, it is in the spec.  Read the spec.  For heaven's sake, the whole
>>>> *point* of the DUID was to come up with something that was more
>>>> reliably unique than the MAC address.
>>> Unfortunately, it is also reliably unpredictable
>> You didn't actually read the spec, did you?
>
>    Clients and servers MUST treat DUIDs as opaque values and MUST only
>    compare DUIDs for equality.  Clients and servers MUST NOT in any
>    other way interpret DUIDs.  Clients and servers MUST NOT restrict
>    DUIDs to the types defined in this document, as additional DUID types
>    may be defined in the future.
>
>
> That section pretty much ends any further discussion on
> predictability, as i am not permitted to make use of that.

No?  You are allowed to compare for equality.  Both the DUID-EN and the
DUID-UUID types can be very predictable, if you want them to be.  Feel
free to put them on a bar code on the box.


Bjørn