Name resolution performance in BIND9

[Francois Tigeot]

On Sat, Nov 13, 2004 at 12:40:10AM -0600, Matthew D. Fuller wrote:
> On Fri, Nov 12, 2004 at 03:16:51PM -0700 I heard the voice of
> Sean Page, and lo! it spake thus:
> > 
> > I am finding that BIND9 (installed to replace the base install of
> > BIND) is taking from 4-8 seconds to resolve a name that isn't
> > cached, where the same lookup on BIND8 will occur in less than a
> > second.
> 
> FWIW, this is a recent thing; I've run the same version of BIND9 for
> ages, and this just started about the time some servers added v6
> addresses (but that isn't the cause; I don't know what is).

Some dns servers fail to answer when asked for v6 records.

You may find this tool usefull to diagnose DNS issues:

http://www.dnsdoctor.org/Main_Page

-- 
Francois Tigeot