routing - Can I have multiple DHCP servers on one network? - Server Fault
DHCP relay through different subnets - Server Fault
Tomato router: multiple static IP devices w/ same IP address on the same router : r/TomatoFTW
How to Configure Cisco Router as DHCP Server? – GetLabsDone
DHCP server for multiple VLANs - Network Engineering Stack Exchange
Example for Configuring a DHCP Server (Based on an Interface Address Pool) - S1720, S2700, S5700, and S6720 V200R010C00 Configuration Guide - IP Service - Huawei