I recently bought a routerboard 750 to try routerOS.
I was previously loadbalancing 2 lines with pfSense but wanted to try MLPPP bonding, i replaced my pfsense box with the RB750 and the problem i'm having is my PC upstairs refuses to get a DHCP lease yet works fine if i manually set an IP on the interface.
I've defined the DHCP pool as 192.168.2.100 - 192.168.2.150 with a gateway and dns of 192.168.2.1, the RB750 has had it's IP set to this.
My pc upstairs is connected to a Linksys WRT160N (DD-WRT) which is in client bridge mode to another (WRT160N w DD-WRT in AP mode)
The 160N's have DHCP and routing disabled, so they're just acting as AP/Switches.
This configuration worked fine with pfSense and pretty much any other router ive used, however with the RB750 the pc connected to the 160N upstairs wont get an Ip, the IP phone connected to the same AP does,
Also Laptops and devices that are connecting directly to the AP downstairs seem to be able to DHCP an IP just fine