[gentoo-dev] djbdns 1.05-r8 breaks forward-only behaviour of dnscache

[gentoo-dev] djbdns 1.05-r8 breaks forward-only behaviour of dnscache

[Justin Whitney]

Hi,

The round-robin patch included in the djbdns-1.05-r8 ebuild breaks
default dnscache FORWARDONLY  behaviour.  this means that servers/@ and
env/FORWARDONLY are not honored, and the ns roots are queried for
lookups.  The result of the patch is that if you set FORWARDONLY and
servers/@ to a non-root cache, expecting to make efficient use of, say,
your ISP's nameservers, you'll end up doing far more queries than you
intended for any given lookup... on my systems because of latency I was
timing out for a lot of lookups.  to test, compile with rr-patch, set
dnscache up to do forward-only (per DJB's docs), and then sniff to see
the root queries I mentioned.  recompile without it, and repeat to see
the difference.

bug filed.

--Justin Whitney

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Re: [gentoo-dev] djbdns 1.05-r8 breaks forward-only behaviour of dnscache

[Andrei Ivanov]

Phew... I've noticed there was something wrong with djbdns, but I couldn't 
figure out why queries take so much time after the upgrade... thanks.

On Thu, 16 Oct 2003, Justin Whitney wrote:

> Hi,
> 
> The round-robin patch included in the djbdns-1.05-r8 ebuild breaks
> default dnscache FORWARDONLY  behaviour.  this means that servers/@ and
> env/FORWARDONLY are not honored, and the ns roots are queried for
> lookups.  The result of the patch is that if you set FORWARDONLY and
> servers/@ to a non-root cache, expecting to make efficient use of, say,
> your ISP's nameservers, you'll end up doing far more queries than you
> intended for any given lookup... on my systems because of latency I was
> timing out for a lot of lookups.  to test, compile with rr-patch, set
> dnscache up to do forward-only (per DJB's docs), and then sniff to see
> the root queries I mentioned.  recompile without it, and repeat to see
> the difference.
> 
> bug filed.
> 
> --Justin Whitney
> 
> --
> gentoo-dev@gentoo.org mailing list
> 
> 

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