Hi guys. I'm no networking expert but I would like to share my experience using this router on UniFi. I bought myself a TP-Link TL-WDR4300 just yesterday due to the unavailability of Asus N16. The 1st thing I did upon unpacking was to check out it's menu and all then proceeded to upgrade it's firmware.

This is where I did a mistake as the international firmware is not the same as the local "UniFi supported" version. Upon installing, I lost the option to set the router to "UniFi mode" and also lost the "VLAN ID" assignment option. Noticing this, I re-installed the firmware "TL-WDR4300_V1_130612(VLAN)_My" from HERE.

2nd mistake was during the firmware upgrade, the progress bar was meant to run twice but for some reason, it hung on my Chrome. Then I restarted my PC and the router together. After that, I keep seeing Time out due to PADO error in the router log. I almost assume this as a lemon unit until I did a hard reset (via the button) then restore factory default via browser and then re-install the same firmware stated above all over again. This time, the progress bar ran twice (1 for installing the firmware and another 1 for restarting the router). Upon completion, I ran the quick setup and key in all the necessary details and voila.

I got this instead of the PADO error: