[Dnsmasq-discuss] Problems with dnsmasq + authentication with AD

Simon Kelley simon at thekelleys.org.uk
Tue Mar 17 21:57:24 GMT 2015


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There's an option to dnsmasq called --filterwin2k which was an
ill-concieved attempt to modify this sort of query. Check that you
don't have that enabled. Apart from that, I'm not aware of anything in
dnsmasq that could cause this.

Cheers,

Simon.


On 17/03/15 09:03, Erling Ringen Elvsrud wrote:
> Hi,
> 
> We use AD to authenticate users for our Linux-servers. Recently we
> started to try out dnsmasq in order to get better dns-request
> performance, better resiliance (more dns-servers, avoid timeout:1,
> etc with the standard glibc resolver).
> 
> Today I noticed that about every fifth logon attempt is a lot
> slower than normal (10x the time). If I stop dnsmasq the slowdowns
> seems to dissapear.
> 
> I can see with many ad-related dns-queries with wireshark when
> logon is slow like ForestDnsZones.mydomain  and
> DomainDnsZones.mydomain. The replies are large (tcp-based) these
> queries returns 20-30 A-records for many domain-controllers.
> 
> Are you aware of similar problems with the dnsmasq /
> ad-integration combination?
> 
> Thanks,
> 
> Erling
> 
> 
> 
> _______________________________________________ Dnsmasq-discuss
> mailing list Dnsmasq-discuss at lists.thekelleys.org.uk 
> http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
> 
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