Re: merge-similar-outgoing-queries.patch and lame servers

On Tue, Mar 03, 2009 at 12:53:29PM -0500, Jeff King wrote:
> On Tue, Mar 03, 2009 at 02:01:53PM +0000, Gerrit Pape wrote:
> > Hi, it looks like the patch doesn't handle responses from lame servers
> > properly.  If such a single request gets a response from a lame server,
> > it can happen that no further requests are sent.  To reproduce, look for
> > a domain with a lame server, and do
> 
> Thanks for the bug report.
> 
> I believe what is happening is that dnscache is hanging in the iopause
> call due to a bug in the qmerge patch. A patch (on top of qmerge) is
> below. Let me know if it solves your problem.

The clients get the answer with this patch, but I don't feel that
confident.  Two client queries 'dnsqr soa domain.with.lame.server & dnsqr
soa domain.with.lame.server &' result in about 100 txpb and about 100
lame log entries within 1.6 seconds before the aswer is sent back to the
clients.

Regards, Gerrit.