Help with DHCPv6 client-identifiers
Bjørn Mork
bjorn at mork.no
Sun Nov 20 20:18:41 UTC 2011
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
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