I have a Mikrotik wifi router and an Asus wifi router configured as wireless repeater connected to the Mikrotik. The connection between Mikrotik and Asus is through wifi. Asus is getting IP address from Mikrotik DHCP server. The wifi clients connected to the Asus are not getting IP address from the Mikrotik DHCP server. If I set the IP address manually on the wifi client the internet works. I eliminated potential faulty hardware by testing with two Mikrotik routers and three Asus routers. Something is blocking the DHCP. Asus is N18U model with very few configuration possibilities. The Mikrotik is a hAP ac2 with a lot configuration possibilities. In the past I had a similar situation with an Ubiquiti AP and I couldn't even isolate the problem.
Do you have any ideas where can be the problem or at least how can I troubleshoot it?
Thanks!