Setup the RTL8156 USB2.5G Ethernet Adapter on Ubuntu 20.04

rtl8156-ubuntu.md

RTL8156 USB2.5G Ethernet Adapter on Ubuntu 20.04

Download: https://www.realtek.com/en/component/zoo/category/network-interface-controllers-10-100-1000m-gigabit-ethernet-usb-3-0-software

Extract the downloaded drivers

sudo tar -xvjf r8152.53.56-2.15.0.tar.bz2 -C /usr/src/

Create a DKMS.conf file

sudo echo -e 'PACKAGE_NAME="r8152"\nPACKAGE_VERSION="2.15.0"\nBUILT_MODULE_NAME[0]="$PACKAGE_NAME"\nDEST_MODULE_LOCATION[0]="/updates/dkms"\nAUTOINSTALL="YES"\nREMAKE_INITRD="YES"' > /usr/src/r8152-2.15.0/dkms.conf

Copy the .rules file to /usr/lib/udev/rules.d

sudo cp /usr/src/r8152-2.15.0/50-usb-realtek-net.rules /usr/lib/udev/rules.d/50-usb-realtek-net.rules

Install and load the driver

sudo dkms add -m r8152 -v 2.15.0
sudo dkms build -m r8152 -v 2.15.0
sudo dkms install -m r8152 -v 2.15.0
sudo depmod -a
sudo modprobe r8152

@jpaodev The out of tree Linux driver for this appears to only be made to support upto Kernel 5.17. Kernel 6+ should have native support and my guide should no longer be followed for distributions with more modern kernels.

I've used the same adaptor across both the latest release of Ubuntu and Proxmox without this.

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As a tip, since it appears yours is detected and since you're using Proxmox, you will need to manually adjust your network configuration to use the new network interface before switching that connection. Read more here and here on that topic if you haven't already :]

(tl;dr update /etc/network/interfaces and replace enp0s31f6 with enx00e04c68006e before switching the cable and rebooting the networking stack)

Will try that! Many thanks for the fast response and explanation - Have a nice week!:)