MAC to IP Address /hostname when disabled DHCP on the AP

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Second device not getting DNS entries from first device to show in Associated Stations

I have two OpenWRT devices. One acts as the Router and is connected to the modem, the other device is wired to the Router (in a LAN port on both sides) and acts as a simple AP. The Router does DHCP and has a list of all clients including hostname. The AP doesn't do DHCP, as all clients get their addresses from the Router. Everything is in a single subnet and the Router IP is set as the DNS server and the Gateway on the AP so the AP should be able to get hostnames from the Router. At least that'…