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Re: [v6ops] Implementation Status of PREF64

Mark Smith <markzzzsmith@gmail.com> Tue, 28 September 2021 15:17 UTC

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From: Mark Smith <markzzzsmith@gmail.com>
Date: Wed, 29 Sep 2021 01:15:26 +1000
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To: daveb <spike@zitomedia.net>
Cc: v6ops list <v6ops@ietf.org>
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Subject: Re: [v6ops] Implementation Status of PREF64
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Well DOCIS equipment doesn't comply with RFC8504 then.

On Tue, 28 Sep 2021, 23:23 daveb, <spike@zitomedia.net> wrote:

> At 08:14 AM 9/28/2021, Bob Harold wrote:
>
> On Sat, Sep 25, 2021 at 3:08 AM Mark Smith <markzzzsmith@gmail.com >
> wrote:
>
>
> On Sat, 25 Sep 2021, 12:55 Owen DeLong, <owen= 40delong.com@dmarc.ietf.org>
> wrote:
> Now if they could only implement DHCPv6.
>
>
> What problem would that solve?
>
> It won't solve the problem of recording IPv6 addresses in use:
>
>
> https://ipv6tao.blogspot.com/2021/09/the-stateful-dhcpv6-myth-no-it-doesnt.html
>
>
> That is an interesting article, thanks for the viewpoint.
> Where I am, we find that DHCP is cost-effective and efficient, and helps
> us find hosts easily 99+% of the time.  We do poll the routers and
> switches for IP/MAC/port mapping, but to poll all our devices takes much
> longer than the DHCP lease time and is expensive in terms of traffic,
> servers, and storage.  NAC and 802.1x would be very expensive.
> So DHCP is the best solution for us.  Please support it.
>
>
>
> Agreed.  I believe the DOCSIS specification says "The eRouter MUST NOT
> support SLAAC on its Operator-facing interface." so DHCP is basically
> required for that infrastructure.  However SLAAC would have to additionally
> be enabled on that same infrastructure to support client devices behind a
> bridged cable modem that do not support DHCP.
>
> --
> Dave Bernardi
>
>
>
> Â --Â
> Bob Harold
>
>
>
>
> Owen
>
>
> On Sep 24, 2021, at 3:26 PM, Erik Kline <ek.ietf@gmail.com> wrote:
>
> My understanding is that Android supports
> <https://cs.android.com/android/_/android/platform/packages/modules/NetworkStack/+/70d7ffa59f1f4ac242d8409143108466025102c7>
> handling PREF64 RA options.
>
> On Fri, Sep 24, 2021 at 10:21 AM David Farmer <farmer=
> 40umn.edu@dmarc.ietf.org> wrote:
> Are there and host or router implementations of PREF64 (RFC8781) out in
> the wild yet?
>
> Thanks
>
>
> --
> ===============================================
> David Farmer               Email:farmer@umn.edu
> Networking & Telecommunication Services
> Office of Information Technology
> University of Minnesota Â
> 2218 University Ave SEÂ  Â  Â  Â  Phone: 612-626-0815
> Minneapolis, MN 55414-3029Â Â  Cell: 612-812-9952
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