After TPLINK is set, all WAN ports are 0.0.0.0, which is caused by the wrong setting. The solution is as follows:

1. First, open a browser on the computer and enter the management IP address of the router in the address bar of the browser.

2. Then enter the administrator password in the opened router management page, and click the login button.

3. Then click the "Internet Settings" icon on the opened router management page.

4. Next, select the option of PPPOE broadband dialing in the opened Internet settings page, and set the dialing account and password at the same time.

5. In addition, see the setting text box of MTU below, which does not need to be modified by default. If the network speed is particularly slow, you can reduce it appropriately, such as 1478.

6. If you want to clone the Mac address of the router, just check the check box in front of "Advanced Settings" and click the "Clone Local Mac Address" menu item in the Mac address cloning operation drop-down menu.