How To Install ifupdown-extra on Debian 11

In this tutorial we learn how to install ifupdown-extra on Debian 11. ifupdown-extra is Network scripts for ifupdown

Introduction

In this tutorial we learn how to install ifupdown-extra on Debian 11.

What is ifupdown-extra

ifupdown-extra is:

This package provides a set of network testing scripts to be used together with the ifupdown package. These scripts can:

  • check the network cable before an interface is configured.
  • test if an assigned IPv4 or IPv6 address is already in use in the network.
  • test if default network gateways are reachable.
  • setup default static routes for interfaces.

Additionally network static routes can also be defined globally for the system when this is needed (e.g. for ‘reject’ rules) and will be added after network initialisation.

This package also provides ’network-test’, a script to test the network configuration status by checking:

  • Status of available interface.
  • Availability of configured gateway routes.
  • If host resolution is working properly (DNS checks).
  • If network connectivity is working, including ICMP and web connections to remote web servers.

There are three methods to install ifupdown-extra on Debian 11. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.

Install ifupdown-extra Using apt-get

Update apt database with apt-get using the following command.

sudo apt-get update

After updating apt database, We can install ifupdown-extra using apt-get by running the following command:

sudo apt-get -y install ifupdown-extra

Install ifupdown-extra Using apt

Update apt database with apt using the following command.

sudo apt update

After updating apt database, We can install ifupdown-extra using apt by running the following command:

sudo apt -y install ifupdown-extra

Install ifupdown-extra Using aptitude

If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Debian. Update apt database with aptitude using the following command.

sudo aptitude update

After updating apt database, We can install ifupdown-extra using aptitude by running the following command:

sudo aptitude -y install ifupdown-extra

How To Uninstall ifupdown-extra on Debian 11

To uninstall only the ifupdown-extra package we can use the following command:

sudo apt-get remove ifupdown-extra

Uninstall ifupdown-extra And Its Dependencies

To uninstall ifupdown-extra and its dependencies that are no longer needed by Debian 11, we can use the command below:

sudo apt-get -y autoremove ifupdown-extra

Remove ifupdown-extra Configurations and Data

To remove ifupdown-extra configuration and data from Debian 11 we can use the following command:

sudo apt-get -y purge ifupdown-extra

Remove ifupdown-extra configuration, data, and all of its dependencies

We can use the following command to remove ifupdown-extra configurations, data and all of its dependencies, we can use the following command:

sudo apt-get -y autoremove --purge ifupdown-extra

Dependencies

ifupdown-extra have the following dependencies:

References

Summary

In this tutorial we learn how to install ifupdown-extra package on Debian 11 using different package management tools: apt, apt-get and aptitude.