Hello.
On 11/17/20 6:40 PM, Chris wrote:
  The knot-resolver documentation only appears to
support Linux. [...] 
No, any POSIX systems should just work.  A few features are tied to
Linux (or even systemd), but that's only a small minority. We officially
don't provide any packages for non-Linux systems, but some exist.
  Any insight to using this on any of the BSD's
would be greatly
 appreciated  
https://svnweb.freebsd.org/ports/head/dns/knot-resolver/
and in [repology] I noticed it in dports as well.
I also know about some macOS options, but you probably don't count that
among BSDs :-)
[repology]: 
https://repology.org/project/knot-resolver/packages
--Vladimir