Yahoo and IPv6

Mark Andrews marka at
Wed May 11 01:57:35 UTC 2011

In message <1305074385.18376.566.camel at karl>, Karl Auer writes:
> On Wed, 2011-05-11 at 10:19 +1000, Mark Andrews wrote:
> > For the record Apple's current iChat (the OS (10.6.7) is completely
> > up to date) fails such a test.  It will try IPv6 and not fallback
> > to IPv4.  End users shouldn't be seeing these sorts of errors.
> Is that possibly a failure of the underlying resolver library? Do other
> applications on the same platform behave correctly?

It doesn't matter where in the system the fault is.  It's all Apple
components.  If the application doesn't get and try all addresses
it is broken.  The nameservers have all addresses in their caches.
MacOS's local cache have all addresses in it.

Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at

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