Downgrade to Firmware ER7206 @ v1_1.1.1 worked for me. Now the DHCP issues no longer annoying. The red arrow at screenshot shows CPU/Memory after downgrade.

I have also many Problems getting IP Adresses from ER7206 @ v1_1.2.3. It is frustrating. The following will help for a moment... I "Click Force Provision" to the ER7206 in OC200 controller. But this...