The local DHCP server on ZD can only provide IPs from it's subnet, and is really intended
for bringing up local APs, or use in a limited scale SMB where everyone is trusted. We
recommend keeping ZD/APs on their own VLAN/subnet, and assigning client VLANs to
your WLAN traffic.
For true Enterprise+ deployments, a company should plan to provide DHCP server(s) for
each client VLAN. Often, these are Win servers with AD/AAA as well.