Install ethtool by entering the following commands in the terminal:
sudo apt update sudo apt install ethtool
Description:
display or change Ethernet device settings
ethtool can be used to query and change settings such as speed, auto- negotiation and checksum offload on many network devices, especially Ethernet devices.
Homepage: https://www.kernel.org/pub/software/network/ethtool/
Version: 1:4.15-0ubuntu1
Section: utils