[Dnsmasq-discuss] Cache Size

[Tom Metro]

Terry Stone wrote:
> Can anyone tell me how long DNSMASQ holds information in the cache...

I would assume the length of time varies per record, as it is something 
specified as part of the record. It's part of the DNS protocol that the 
upstream server gets to say how long a record is good for.


> ...and if it is possible to lengthen that time.

I suspect not.


> Asterisk has an unfortunate trait that if SIP trunks that register with 
> a VOIP provider cannot obtain DNS resolution all SIP extensions stop 
> working for internal phone calls.

Your best bet is probably to make sure this bug is filed with Asterisk 
and encourage the developers to fix it.

Another option might be to use a SIP proxy. That might put a layer 
between your Asterisk server and your VoIP provider, such that Asterisk 
doesn't notice when the WAN connection is down.

  -Tom

-- 
Tom Metro
Venture Logic, Newton, MA, USA
"Enterprise solutions through open source."
Professional Profile: http://tmetro.venturelogic.com/