I'm using the TP-Link TL-WR941ND Ver3.2 [Atheros] as an example to walk through the following setup, the same steps should apply to most DD-WRT supported devices.

• Initial flashing from factory to DD-WRT

• Basic setup act as common gateway router

• Setup VLAN tagging for UniFi (internet only)

• Setup to act as an Access Point (eg, use this type of setup to extend the MikroTik RB750/750G WiFi capability)

• N-Only WiFi setup (if all devices fully support N-mode)

• Revert back to factory (Web Revert method)