[Pdns-users] Handling malformed queries.

Augie Schwer augie.schwer at gmail.com
Tue Oct 31 19:06:12 UTC 2006

On 10/31/06, bert hubert <bert.hubert at netherlabs.nl> wrote:
> On Mon, Oct 30, 2006 at 02:09:52PM -0800, Augie Schwer wrote:
> > When PowerDNS receives a malformed qdomain (google%com) it drops the
> > query and the client eventually times out; BIND it seems will either
> > give a NXDOMAIN or root referrals; wouldn't it be better if PowerDNS
> > did something similar from a clients perspective?
> In the past this has lead to "hammering", with clients repeating broken
> queries the moment the servfail comes in. Silence appears to be the best way
> to react to broken queries. Garbage in, garbage out etc.
> It may not be the optimal user experience, but amortaged it is, as the
> nameserver is far quicker to respond to bonafide queries when not being
> flooded by broken clients.

That sounds like good reasoning to me; thanks for the explanation.

Augie Schwer    -    Augie at Schwer.us    -    http://schwer.us
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