DNS resolver reaction to non-reachable authoritative DNS server

Anurag Bhatia me at anuragbhatia.com
Fri Mar 14 19:58:45 UTC 2014

Got it!

Thankyou very much for help. Have a good weekend ahead.

On Fri, Mar 14, 2014 at 6:59 AM, Doug Barton <dougb at dougbarton.us> wrote:

> On 3/13/2014 5:23 PM, Mark Andrews wrote:
>> If your customers are using BIND there is a flag you can supply to named
>>> >to cause it to operate only in IPv4. That would avoid this problem
>>> >altogether.
>> >
>> And is basically not needed as the IP stack (with the exception of
>> Solaris) informs named when there isn't a route to the destination
>> and named moves onto the next address to try.
> Sure, but by using the flag you skip that step, and the accompanying error
> message in the logs.
> The fact that this issue has risen to the level of "annoyance" rather than
> just "oddity" as it used to be is actually a good thing. It's a sign that
> more and more sites are deploying IPv6 for critical infrastructure.
> Doug


Anurag Bhatia

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