is it possible to import a list into DHCP service? I think it is pretty complicated to add all hosts manually over iManager. I was thinking about generating a text-file with e.g. AngryIPscanner which includes hostname-IP-mac.

Also is it really necessary to unload/reload the DHCP service after I added new DHCP-hosts in iManager? Any difference when I would be using DNS/DHCP console?