Setting max TTL for negative cache

[chris.ett]

I would like to cache negative (NXDOMAIN) responses for only 5 seconds, regardless of what is set in SOA. I tried adding the following to the DNS Resolver's Custom options:

cache-max-negative-ttl: 5

But this gave me a syntax error. Am I doing it wrong? Is pfsense using an old version of unbound?

I found the documentation for this setting here.

[viktor_g]

@chris-ett use such syntax in the custom options field:

server:
cache-max-negative-ttl: 5

[chris.ett]

@viktor_g Thanks, that works.

[johnpoz]

Out of curiosity on my part, why would you want to do this?