Kea 1.8.0 kea-dhcp-ddns missing build info
Kea Arm Chapter 13.2 "Starting and Stopping the DHCP-DDNS Server" suggest that the following command should produce a config.report.
strings path/kea-dhcp-ddns | sed -n 's/;;;; //p
The binary appear to be missing these strings on a default build from git (ubuntu 19.10)