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Re: [v6ops] use of Teredo addresses in Apple devices

Edwin Cordeiro <edwin@scordeiro.net> Fri, 24 July 2015 09:17 UTC

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From: Edwin Cordeiro <edwin@scordeiro.net>
Date: Fri, 24 Jul 2015 11:16:27 +0200
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To: Lorenzo Colitti <lorenzo@google.com>
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Subject: Re: [v6ops] use of Teredo addresses in Apple devices
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Even if the address is used only inside the telephone, I don't think using
the Teredo address is a good idea, as once it started being used in one
product it may be extended in other products of the company with unexpected
results.

If any of the addresses already reserved at IANA fits your need (
http://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml),
suggest a new one to be reserved.

In a previous discussion about extending the documentation reserved
addresses, one important comment was that no words should be used to give
additional meaning our proposed IPv6 reserved space, despite the temptation.



Edwin Cordeiro

On Fri, Jul 24, 2015 at 10:37 AM, Lorenzo Colitti <lorenzo@google.com>
wrote:

> I'm not sure that using ULAs is a good idea. ULAs are not likely to be
> representative of real NAT64 deployments, which use global addresses.
>
> On Fri, Jul 24, 2015 at 10:24 AM, STARK, BARBARA H <bs7652@att.com> wrote:
>
>> Great presentation on what Apple is doing to drive apps to implement IPv6.
>> In thinking about use of the Teredo address space to advertise a prefix
>> to tethered devices, I do have a concern. In many of my personal home
>> networked devices, I've purposefully disabled Teredo and ISATAP and even
>> put in some rules to prevent the devices from accepting such addresses.
>>
>> I think this would be a reasonable use of a ULA. A PI might be even
>> better. I hear PIs are pretty easy to come by. The PI would have the
>> advantage of being known to come from an Apple device for this NAT64
>> purpose. That could help with trouble shooting.
>> Barbara
>>
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