Hi Sean, On 23/11/2018 16:56, Sean Darcy via Unbound-users wrote: > I'm running a voip application, asterisk, that dies if it can't > resolve the addresses for its SIP registrations. Importantly there are > other connections, PSTN, that work even if the internet connection is > down. Also, I want the app to stay alive so that it can reconnect to > the SIP servers once the internet comes back up. For whatever reason, > asterisk itself will not have a fix for this. > > I have unbound working on the machine. I'd like to have unbound serve > an address from its cache even if it's beyond the ttl IF it can't > refresh the address. In other words, just serve the stale address > until it can be refreshed. > > Any way to do this ?
serve-expired: yes in unbound.conf serves stale data. It is good to also enable prefetch: yes. Then unbound tries to refresh data that is about to expire, whilst serving the existing data. You can fine-tune it with the serve-expired-ttl and serve-expired-ttl-reset options if you want. But you can just leave those at the defaults. Best regards, Wouter > > sean
