DHCP not working for client behind bridge

Hi,

I have a device without wireless capabilities which I need to connect wirelessly. I have bought TP-Link TL-WR802N which can act as a wireless bridge/adapter:

Mikrotik <---wifi---> TL-WR802N <---eth---> client device

The issue is that while TL-WR802N is getting its IP address from Mikrotik’s DHCP server, the client device isn’t. The DHCP server on TL-WR802N is disabled. When I set a static IP address on the client device, the connection works fine.

The following message appears in the Mikrotik logs:

dhcp,warning defconf offering lease for to without success

Which means that Mikrotik receives a DHCP request and even responds to it. The question is: what happens to the response?

Documentation of TL-WR802N suggests that it should work (i.e. a client device receiving DHCP from the main router). Perhaps something on Mikrotik blocks DHCP responses in this case? Are there any settings I’m supposed to change for this to work?

I mean, when TL-WR802N is in the client mode, there are not many settings available, so it’s not a matter of configuration TL-WR802N.

Any help will be greatly appreciated.

http://forum.mikrotik.com/t/dhcp-not-passing-through-wireless-link/153840/1
tl;dr mac-address conflict, if a third party router is in between the MT dhcp-server and the clients