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----- Original Message -----
From: "Alexander Svensson" <alexander(_at_)svensson(_dot_)de>
To: "Jim Fleming" <JimFleming(_at_)Ameritech(_dot_)Net>
Cc: "GA List Monitoring" <ga-abuse(_at_)dnso(_dot_)org>
Sent: Saturday, August 10, 2002 6:55 AM
Subject: [Admin] Warning (was: Re: [ga] 0:212 IPv8 Recommended .BIZ Registras)
Jim,
please keep in mind that this is a forum for DNSO work,
decidedly *not* a place to post registrar recommendations
and *not* a place for extensive discussion of the
address space (to discuss this, go to
aso-policy(_at_)aso(_dot_)icann(_dot_)org).
Please to be warned that off-topic postings are violating
the list rules and can lead to a suspension of posting
rights.
Regards,
/// GA List Monitor
At 09.08.2002 17:34, Jim Fleming wrote:
Has the ICANN Board and staff approved this ?
Jim Fleming
2002:[IPv4]:000X:03DB
http://www.iana.org/assignments/ipv4-address-space
http://www.ntia.doc.gov/ntiahome/domainname/130dftmail/unir.txt
----- Original Message -----
From: "Bob Hinden" <hinden(_at_)iprg(_dot_)nokia(_dot_)com>
To: "IPv6 List" <ipng(_at_)sunroof(_dot_)eng(_dot_)sun(_dot_)com>
Sent: Friday, August 09, 2002 5:27 PM
Subject: Changes to IPv6 Addressing Architecture Draft
At the IPv6 working group sessions at the Yokohama IETF two changes to the
IP Version 6 Addressing Architecture draft
<draft-ietf-ipngwg-addr-arch-v3-08.txt>
were discussed. These changes were proposed based on feedback received
from our area director and email discussion on the mailing list. A
summary
of the AD comments is include at the end of the email.
The changes that were proposed at the meeting were to relax the interface
identifier uniqueness requirements (from the link to subnet prefix) and to
change the definition of Site-Local addresses to make the subnet field
54-bits (and eliminate the 38-bit zero field).
After discussing the proposed changes, a consensus was reached at the
Yokohama meeting to make them. The purpose of this email is to validate
that consensus on the mailing list and to review the specific changes to
the internet draft.
The proposed changes (changed lines marked by "|") to the ID are as
follows:
Change to second sentence in the first paragraph of section 2.5.1:
Interface identifiers in IPv6 unicast addresses are used to identify
interfaces on a link. They are required to be unique within a subnet |
prefix. They may also be unique over a broader scope. In some cases |
an interface's identifier will be derived directly from that
interface's link-layer address. The same interface identifier may be
used on multiple interfaces on a single node, as long as they are
attached to different links.
and from section 2.5.6 where site-local is defined:
Site-Local addresses have the following format:
| 10 |
| bits | 54 bits | 64 bits |
+----------+-------------------------+----------------------------+
|1111111011| subnet ID | interface ID | |
+----------+-------------------------+----------------------------+
Site-local addresses are designed to be used for addressing inside of
a site without the need for a global prefix. Although a subnet ID may |
be up to 54-bits long, it is expected that most globally-connected |
sites will use the same subnet IDs for site-local and global prefixes. |
If there is agreement with these changes I will submit a new draft (-09)
that the area directors can proceed with.
Bob
-------------------------------------------------------------------
Comments from Thomas Narten:
1) The -07 ID contains the wording:
Interface identifiers in IPv6 unicast addresses are used to identify
interfaces on a link. They are required to be unique on that link.
Given the on-going issues surrounding DAD vs DIID, I felt it
appropriate to check with the WG whether this wording was indeed what
the WG believed the architecture should require.
2) The -07 ID contains the wording:
Site-Local addresses have the following format:
| 10 |
| bits | 38 bits | 16 bits | 64 bits |
+----------+-------------+-----------+----------------------------+
|1111111011| 0 | subnet ID | interface ID |
+----------+-------------+-----------+----------------------------+
Given that the fixed 16-bit subnet ID in global addresses was changed
to one having a flexible boundary, the subnet ID in site-locals should
also not have a fixed boundary. Note that other parts of the document
showing addresses were updated to use generic "m" bits, rather than
fixing the field at 16 bits, under the concern that implementations
*might* somehow hardcode the boundary in their implementations.
Also, it might be good to clarify that the middle bits are undefined
and should be 0. I.e., implementors could interpret the above words as
saying the bits are defined to always be zero (as opposed to just
reserved for future use and MUST be zero), which could lead
implementations to somehow check that those bits are 0, and if not, do
something incorrect (like signal an error).
The specific text that was proposed and discussed at the Yokohama
meeting addresses the main concern I had.
At the meeting, there were still some folks that seemed unhappy with
the proposed change. I'd be interested in understand why. Only itojun
spoke up on this point, and he stated this would make site-local
addresses more attractive, which he didn't consider a feature. :-)
Thomas
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At 09.08.2002 16:24, Jim Fleming wrote:
http://www.thepricedomain.com/index.php?domainlist=biz
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Registra...Registry...Registrar...Reseller...Webmaster...Customer
Jim Fleming
2002:[IPv4]:000X:03DB
http://www.iana.org/assignments/ipv4-address-space
http://www.ntia.doc.gov/ntiahome/domainname/130dftmail/unir.txt
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