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Re: [86attendees] IPv6 only SSID not working on iPhone

Dan York <york@isoc.org> Wed, 13 March 2013 19:35 UTC

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From: Dan York <york@isoc.org>
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Date: Wed, 13 Mar 2013 15:35:14 -0400
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To: joel jaeggli <joelja@bogus.com>
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Cc: "86attendees@ietf.org" <86attendees@ietf.org>, "Rajiv Asati (rajiva)" <rajiva@cisco.com>
Subject: Re: [86attendees] IPv6 only SSID not working on iPhone
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Rajiv,

On Mar 13, 2013, at 3:23 PM, joel jaeggli <joelja@bogus.com> wrote:

> On 3/13/13 2:23 PM, Rajiv Asati (rajiva) wrote:
>> Anybody know why?
>> 
>> My iPhone 5 (And many iPhone 4) don't get wifi associated after selecting the v6 only SSID.
> they assume any network they can't dhcp on is an undesirable network.

As it happens, I just spent some time with Stuart Cheshire of Apple trying to diagnose this after Sunset4 ended.  We found that the issue seems to be that both iOS and Mac OS X are not getting a DNS resolver address on the ietf-v6ONLY network.  They *are* getting IPv6 addresses, but not getting the DNS resolver info.  On Mac OS X if you manually enter a DNS server address of "2001:df8:0:5::6" it will work.
 
Someone else was able to bring up Windows 8 in a vmware window on a Mac (in bridge mode) and it did get both an IPv6 address and a DNS resolver and worked fine.

I raised a ticket with mtd@ietf.org who then raised a ticket with the NOC.

Dan

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Dan York
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