Hi Fernando,
On 27/02/2017 02:05, Fernando Gont wrote:
> On 02/26/2017 09:55 AM, Sander Steffann wrote:
>> Hi,
>>
>>> 2.3. Address Type Identification
>>>
>>> The type of an IPv6 address is identified by the high-order bits of
>>> the address, as follows:
>>>
>>> Address type Binary prefix IPv6 notation Section
>>> ------------ ------------- ------------- -------
>>> Unspecified 00...0 (128 bits) ::/128 2.4.2
>>> Loopback 00...1 (128 bits) ::1/128 2.4.3
>>> Multicast 11111111 ff00::/8 2.6
>>> Link-Local unicast 1111111010 fe80::/10 2.4.6
>>> Global Unicast (everything else)
>>>
>>>
>>> I wonder if this table should explicitly call out ULAs, and provide a
>>> reference to the corresponding section.
>>
>> ULAs are not an address type, they are Global Unicast. Adding them here might confuse people. And if we include ULAs then there is lots more that we should include as well. So while I understand your question, I think it would be better not to.
>
> The "confusing" part is that, while globally unique, their scope is not
> really global -- i.e., they are not meant to be globally routable.
>
> Wasn't there at some point an I-D aiming to clarify what "global" meant?
> -- IIRC, authored by Brian et al.
Not me, but you are thinking of draft-bchv-rfc6890bis
However I think this is totally out of scope for 2460bis, where the above summary
is necessary & sufficient. It's covered in 4291bis (section 2.4.7).
Brian