Hi @PP_, Not sure if this would cause the problem, but the interface's address is included in the DHCP range. Try setting the lower bound to 10.8.0.2 or higher. I'm actually surprised the UI even...

Hi @crispbytes, maybe you need more than one WAN port to see the Load Balancer option.

@NoMadMan, Glad it wasn't anything malicious. @GRL's sugguestion should help in the future. This will not apply to your unmanaged switch, so someone could unplug an AP and plug in their own device;...

Hi @Ataris, it might be easier just to connect the Fortigate firewall to a LAN port on the ER7412-M2 instead of it's WAN port.

@NoMadMan, it does appear there's a DHCP service running somewhere. I'm doubtful that the upgrade itself caused the issue, other than forcing the devices to re-connect. As a sanity check, make sure...

Hi @NoMadMan, I think the VIGI NVR's have a DHCP server option, so maybe one is active. Try unplug both NVRs and reboot the switch to see if the issue goes away.