AT&T Uverse IPv6 vs. Mac OS X 10.6

[Robert Johnson]

It’s likely something broken in AT&T’s implementation - I have a G5 (10.5.8) with Comcast and native dual stack which works just fine.

Robert Johnson
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> On Mar 26, 2016, at 3:19 PM, Jerry Kemp <other at oryx.us> wrote:
> 
> Just curious if something specifically is broken or non-fixable with the 10.6.8 IPv6 stack?
> 
> I'm specifically wondering if you did any troubleshooting to resolve this?  Or if just disabling IPv6 was the quick'n'dirty answer?
> 
> I'm excited for IPv6, but many of my Apple devices I have held back at 10.6 as the number of features that Apple took away seem to increase exponentially after 10.6.x.
> 
> Jerry
> 
> 
> On 03/26/16 11:31 AM, Tapley, Mark wrote:
>> (Apologies in advance to non-Apple users)
>> 
>> Mac folks,
>> 	Last week AT&T “upgraded” our Uverse service. All of our Macs running anything 10.6.8 or older quit working.
>> 	Cure was to turn off IPv6: System Preferences -> Network -> Advanced -> TCP/IP -> iPv6 to “Off” instead of “Automatic”.
>> 
>> 	Symptoms were *very* widespread, and matched reasonably well to failing hard drive or failing memory - system freeze, spinning beach-ball forever, can’t read directory, etc. etc. etc.  On the G3, I rebooted in single-user mode and actually got part way through the output of “ps -aux” in one case before freezing. However it did respond to Ctl-C and would then do a “ps -a” no problem, just no “ps -aux”.  We were a bit silly, didn’t read our Uverse email, and didn’t test other systems before hooking more old systems into the network - which then didn’t work. We were panicing about viruses, pulling hair out, sacrificing goats ...
>> 
>> 	Systems affected were :
>> 
>> iMac G3 Mac OS X 10.4.11  - ethernet
>> PowerBook G4 Mac OS X 10.4.11 - wi-fi
>> iMac 2011 intel Mac OS X 10.6.8 - wi-fi
>> 
>> 	Apologies if this is a known bug, but it really puzzled us for a while because the effects were so systemic; I hope I can prevent anybody else from getting a nice new (needless) hard drive like the 2011 iMac did…
>> 
>> 					- Mark
>> 					210-522-6025 office         210-379-4635    cell
>>