Install bridge-utils by entering the following commands in the terminal:
sudo apt update sudo apt install bridge-utils
Description:
Utilities for configuring the Linux Ethernet bridge
This package contains utilities for configuring the Linux Ethernet bridge in Linux. The Linux Ethernet bridge can be used for connecting multiple Ethernet devices together. The connecting is fully transparent: hosts connected to one Ethernet device see hosts connected to the other Ethernet devices directly.
Version: 1.5-15ubuntu1
Section: net