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.
Cheers,
--
Fernando Gont
SI6 Networks
e-mail: fgont(_at_)si6networks(_dot_)com
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