perfdhcp sends `rate` * `exit-wait-time` too many packets

When running perfdhcp with the -f and -n parameters, perfdhcp sends num-request + renew-rate packets. Is this intended? Should it not only send num-request packets?

Here is the command I used.

perfdhcp -D 1024 -d 1024 -d 1024 -f 16 -n 1024 -n 1024 -r 16 -6 -R 4294967295 -W 1000000 -l ens4

And it resulted in:

***Statistics for: SOLICIT-ADVERTISE***
sent packets: 1040

Notice that rate == renew-rate. Could be relevant.

Could behave the same for -F.