NXDOMAIN cache

[Stephane Bortzmeyer]

On Sun, Oct 25, 2015 at 12:59:23AM -0700,
 Dave Warren via Unbound-users <unbound-users at unbound.net> wrote 
 a message of 58 lines which said:

> Unbound has a "cache-max-negative-ttl", but no minimum is listed at
> https://unbound.net/documentation/unbound.conf.html

I disagree, there is:

 cache-min-ttl: <seconds>
              Time to live minimum for  RRsets  and  messages  in  the  cache.
              Default  is  0.  If the minimum kicks in, the data is
	      cached for ...

Note that, unlike cache-max-ttl, it is a violation of the protocol
and, of you use it, horrible things may happen.