Dhcp not updating dns server 2016 r2
You might be able to do this by tweaking some group policy settings, or by running a script to bulk "ipconfig /registerdns" on a bunch of clients.
If you insist on doing this from the server end of things, it should be possible to write a custom program to read the entries from a DHCP lease export, and register the addresses, but be sure to run it as the same account that DHCP uses for registrations, or else it may have trouble updating the entries in the future.
However, in Technical Preview 5, Microsoft has re-added the ability to administer Nano Server locally through Power Shell.
According to Microsoft engineer Jeffrey Snover, Nano Server has 93% lower VHD size, 92% fewer critical security advisories, and 80% fewer reboots than Windows Server.
It does not support console login, either locally or via Remote Desktop Connection.