shorten cache ttl?

[phn at icke-reklam.ipsec.nu]

Marten Lehmann <lehmann at cnm.de> wrote:
> Hello,

>> Doesn'y apply, "max-cache-ttl" is about existing records.
>> 
>> Try "max-ncache-ttl" which according to the documentation :
>> "To reduce network traffic and increase performance the server stores negative answers. max-ncache-ttl is used to set a maximum retention time for these answers in the server in seconds. The default max-ncache-ttl is 10800 seconds (3 hours). max-ncache-ttl cannot exceed 7 days and will be silently truncated to 7 days if set to a greater value."

> I was setting both to 0 and restarted BIND (I really stopped BIND 
> completely and started it again). The nameservers for .com-delegations 
> (e.g. a.gtld-servers.net) respond with the correct NS-records. My 
> caching BIND does not.

ttl=0 won't do what you expect. Avoid and go for reasonable balues.

> Regards
> Marten


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Peter Håkanson         
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