I'm having problem that sometimes wireless clients doesn't receive IP from the DHCP server. The network map looks like this:
All IP are static leases configured in hEX built-in DHCP server. I have the "always broadcast" option turned off, but it seems that it will turn on on its own. All LAN clients receive IP just fine.
The UniFi AP AC Lite is flashed with LEDE Reboot. However, the same problem also occurs to the original UniFi firmware. Sometimes even the UniFi itself doesn't response to DHCP, but if I run DHCP server on my own computer it works just fine. I suspect that Mikrotik's DHCP server is at fault here.
Also, I tried to run dnsmasq DHCP server on the Unifi and there is no DHCP problem.
I enabled port mirroring on the hEX, and ran Wireshark. It seems that the router did offered DHCP, but there are no response.
(please let me know if you need more details on packet capture)
Is there are anything I should check on both Mikrotik and the LEDE UniFi AP AC?