How To Install dhcp-helper on Ubuntu 18.04
Introduction
In this tutorial we learn how to install dhcp-helper on Ubuntu 18.04.
What is dhcp-helper
dhcp-helper is:
dhcp-helper is a DHCP and BOOTP relay agent. It listens for DHCP and BOOTP broadcasts on directly connected subnets and relays them to DHCP or BOOTP servers elsewhere. dhcp-helper is much smaller than dhcp3-relay package and it does not require the Packet Filter kernel facility to be present. This makes it a good choice for use on small or embedded systems. Unlike dhcp3-relay, dhcp-helper can be configured to forward DHCP requests as broadcasts, and therefore does not need to be given the IP address of the DHCP server, only the network in which it resides.
There are three methods to install dhcp-helper on Ubuntu 18.04. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install dhcp-helper Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install dhcp-helper using apt-get by running the following command:
sudo apt-get -y install dhcp-helper
Install dhcp-helper Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install dhcp-helper using apt by running the following command:
sudo apt -y install dhcp-helper
Install dhcp-helper 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 Ubuntu. Update apt database with aptitude using the following command.
sudo aptitude update
After updating apt database, We can install dhcp-helper using aptitude by running the following command:
sudo aptitude -y install dhcp-helper
How To Uninstall dhcp-helper on Ubuntu 18.04
To uninstall only the dhcp-helper package we can use the following command:
sudo apt-get remove dhcp-helper
Uninstall dhcp-helper And Its Dependencies
To uninstall dhcp-helper and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:
sudo apt-get -y autoremove dhcp-helper
Remove dhcp-helper Configurations and Data
To remove dhcp-helper configuration and data from Ubuntu 18.04 we can use the following command:
sudo apt-get -y purge dhcp-helper
Remove dhcp-helper configuration, data, and all of its dependencies
We can use the following command to remove dhcp-helper configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge dhcp-helper
References
Summary
In this tutorial we learn how to install dhcp-helper package on Ubuntu 18.04 using different package management tools: apt, apt-get and aptitude.
