This is queryperf, a DNS server query performance testing tool.
It is primarily intended for measuring the performance of
authoritative DNS servers, but it has also been used for measuring
caching server performance.
See /usr/local/share/docs/queryperf//queryperf.txt for more
information on the command line option and the required
configuration files. ND-of-queryperf/pkg-descr
PR: ports/85179
Submitted by: Edwin Groothuis <edwin@mavetju.org>