Dave Stewart dstewart at
Thu Sep 28 15:58:36 UTC 2006

On Sep 27, 2006, at 5:13 PM, Joseph S D Yao wrote:
> On Wed, Sep 27, 2006 at 03:12:49PM -0700, broadcast wrote:
> ...
>> Well, I havent used the -4 option, everything seems to be working
>> properly with the ncache 1 second option.
> Ah.  Well this is useful feedback.  Thanks.

Broadcast had mentioned the ncache setting resolved the problem in a  
previous message, I figured that implied he hadn't tried the -4  
option (people tend to stop trying things when they stumble upon  
something that works:). Maybe you missed that Joe.

My question as a student of Bind and not an expert is this: is there  
any "anti-social" behavior occurring because of the ncache being set  
to such a short time? It would seem to me that this might cause  
Broadcast's bind server to repeatedly query these bad domains (since  
the negative response isn't being cached, therefore the domain isn't  
in the cache ...), increasing traffic. If so, I would guess this can  
be mitigated against by using the -4 option, reducing DNS noise on  
Broadcast's servers. Or am I missing something or otherwise making a  
mountain out of a molehill?

Dave Stewart
Aqua~Flo Supply (Goleta CA)
dstewart at aquaflo dot com

No trees were harmed during the production of this email,
but a large number of electrons were terribly inconvenienced ...

More information about the bind-users mailing list