Clients get DNS timeouts because ipv6 means more queries for each lookup

Jonathan Kamens jik at
Mon Jul 11 20:25:59 UTC 2011

On 7/11/2011 4:06 PM, Bill Owens wrote:
>   in which the first sentence says it all: "The nameservers for are broken."
It's not just that's broken, obviously. I see this error 
in my logs for 19 domains since July 3:

Even if PowerDNS is the only source of this issue, and even if the new 
version of PowerDNS is released tomorrow, I'm sure there will still be 
sites running the old version a year from now. So just relying on a 
PowerDNS release to fix this problem seems unwise.

Users are experiencing this problem /now/ in the field, and more users 
will be experiencing it as BIND is upgraded in more and more places. 
Every single user relying on a Fedora 15 DNS server, for example, is 
going to see occasional unnecessary DNS timeouts when trying to resolve 
host names.

It seems clear to me that a generally available, generally applicable 
fix to BIND is needed to avoid this issue and perhaps similar issues 
like it.


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