Applies to: WRT-P-5205L

Issue Summary

Missing drivers for a Network Interface Card (NIC) is a known issue with a Linux Server. This article describes a workaround method to re-connect the NIC. 

Resolution

To install the Ubuntu NIC driver:

1. Navigate to https://www.realtek.com/Download/List?cate_id=584
2. Download the 5G Ethernet LINUX driver r8126 (for kernel up to 6.15).
3. In the GUI, open the Downloads folder.
4. Open r8126-10.016.00.tar.
5. Drag the r8126-10.016.00 folder out of the archive and place it directly into Downloads.
6. Click Ctrl + Alt + T to open a terminal window.

7. Run the following commands:
   cd Downloads
   cd r8126-10.016.00
   sudo ./autorun.sh
    

   NOTE: You will be prompted for the administrator password.

8. Verify both NICs are detected by running the following command: 
   ifconfig -a
   
   Two network interfaces are now listed.