specific ttl in a caching dns

[Kevin Darcy]

Barry Margolin wrote:

>In article <do8r38$1kk9$1 at sf1.isc.org>,
> Stella Korakaki <skor at hellug.gr> wrote:
>
>  
>
>>Hi all.
>>
>>  I need to know if there's any to way to specify the ttl for certain 
>>domains in a caching dns server.
>>For example, I see entries in my cache from dyndns.org  that have ttl > 
>>3 hours. So I need to configure my bind so that for every hostname at 
>>dyndns.org the ttl is something less than 1 hour.
>>    
>>
>
>I don't think there's a way to do it on a per-domain basis.  You can 
>configure the max-ttl and max-ncache-ttl options, but they affect all 
>domains.
>
You can flush specific names *completely* out of the cache using rndc's 
"flushname" command. Requires a very-recent version of rndc...

                                                                         
                                                               - Kevin