dnsperf 2.13.0-1 (armhf binary) in ubuntu mantic

 dnsperf gathers accurate latency and throughput metrics for the Domain Name
 Service (DNS). Network operators can benchmark their naming and addressing
 infrastructure. dnsperf "self-paces" the DNS query load to simulate network
 conditions.
 .
 resperf systematically increases the query rate and monitors the response
 rate to simulate caching DNS services.