One of the main problems with Unifi at the moment is that it utilizes a protocol known as 802.1q or tagged VLANs to achieve Internet and IPTV connectivity. The PPPoE connection must be made over VLAN 500 and IPTV must connect through VLAN 600. This is the job of the DIR-615 by default, to operate on these VLANs while providing your home network with standard network connectivity. What would happen if this device fails or is improperly configured? You would totally lose Internet connectivity.

It is because of these VLANs that unlike other PPPoE based services (Streamyx), you cannot make a 'dialer' in Windows and perform a direct connection when such a situation arises. As such, I have gone ahead and programmed a simple tool called the Unifi VLAN Forwarder for Windows. What this tool does is add the crucial 4-byte VLAN tag to all outgoing PPPoE connections and remove any incoming PPPoE data with VLAN tags on them. Therefore, it 'transparently' creates a VLAN for you despite your network card not actually supporting it. You will then be able to create a standard PPPoE dialer in Windows, make a direct connection to the Fiberhome/ZTE VDSL modem and connect to the Unifi network to perform crucial tasks such as checking your email or asking for help.

The network performance using this experimental tool wont be good but it gets the job done and allows you to diagnose your Unifi line when you're unsure of whats causing the problem.

Usage :

Download the tool here .
Make sure you have the latest version of winpcap installed. Download it here .
Ensure that your PCs network interface card is directly connected to the Fiberhome/ZTE VDSL modem.
Run the program as needed. A list of network interface cards will appear. Select the network interface card that is connected to the Fiberhome/ZTE VDSL modem.
In my case its the Realtek RTL8169.
Once the forwarder notifies you that it is 'listening' on the interface you have selected, go ahead and make the PPPoE dialer connection in Windows and enter your Unifi account details. It should be able to connect fine. Do not close the Unifi VLAN Forwarder application until you have disconnected the PPPoE session.

D-Link DIR-615 G1 Factory Firmware 7.05 + Manuals

This is the stock DIR-615 G1 factory firmware and instruction manuals from the official D-Link website. Download it here .

D-Link DIR-615 G2 Factory Firmware 7.05B + Release Notes

This is the stock DIR-615 G2 (7.05B) factory firmware and release notes from the official D-Link website. Download it here .

D-Link DIR-615 G2 Factory Firmware 7.09

This is the stock DIR-615 G2 (7.09) factory firmware from the official D-Link website. Download it here .