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Re: [v6ops] RFC for fec0:0:0:ffff::1?

"nalini.elkins@insidethestack.com" <nalini.elkins@insidethestack.com> Wed, 30 November 2022 14:37 UTC

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Date: Wed, 30 Nov 2022 14:37:00 +0000
From: "nalini.elkins@insidethestack.com" <nalini.elkins@insidethestack.com>
To: Klaus Frank <klaus.frank@posteo.de>, Erik Kline <ek.ietf@gmail.com>
Cc: "v6ops@ietf.org" <v6ops@ietf.org>, "ipv6@ietf.org" <ipv6@ietf.org>
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Subject: Re: [v6ops] RFC for fec0:0:0:ffff::1?
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Klaus,
I have heard rumors that Microsoft Active Directory uses IPv6 site local unicast.  I have not confirmed this myself.  I have been meaning to do it but have not found the time.   If anyone knows for certain either way, that would be great to know.
Thanks,

Nalini Elkins
CEO and Founder
Inside Products, Inc.
www.insidethestack.com
(831) 659-8360 

    On Tuesday, November 29, 2022 at 10:35:58 PM PST, Erik Kline <ek.ietf@gmail.com> wrote:  
 
 Am not aware of (nor could I find) any RFC about a site-local DNS address.

The only mention is the long-ago expired draft you found (which I
vaguely remember having skimmed once).

And, of course, site-local has been deprecated for some time.

As for why _any_ OS would ever use this... ¯\_(ツ)_/¯

On Tue, Nov 29, 2022 at 8:08 PM Klaus Frank <klaus.frank@posteo.de> wrote:
>
> Hi,
>
> does anyone know what RFC is responsible for the IPv6 DNS server
> configuration on all windows clients defaulting to fec0:0:0:ffff::1, I
> was unable to find any. Nor is it listed in the iana special-purpose
> address registry.
>
> I however found a draft (draft-ietf-ipv6-0dns-discovery-07) from 2002,
> but no actual RFC.
>
> Does anyone know more about this? Is this something that is "just
> Microsoft specific" or is there a more general standard behind it?
>
> Sincerely,
> Klaus Frank
>
> _______________________________________________
> v6ops mailing list
> v6ops@ietf.org
> https://www.ietf.org/mailman/listinfo/v6ops

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