npd6 command not found

Introduction

When you run more command in linux terminal / console, you get the following error message

npd6: command not found

or when using sudo you get the following error message

sudo: npd6: command not found

Solutions to npd6: command not found

How To Fix npd6: command not found in Ubuntu / Debian / Kali Linux / Raspbian

In Ubuntu npd6 is provided by npd6 package.

npd6 is:

npd6 is a daemon which listens on nominated interfaces for IPv6 Neighbor Solicitations which match defined prefixes. It will answer them with an appropriate Neighbor Advertisement.

To fix this problem, we can install more using the command below.

sudo apt-get -y install npd6

This command might take some time to finish depending on your machine internet connection.

You can also use apt command to install npd6.

sudo apt -y install npd6

Or if you have aptitude installed you can use the following command.

sudo aptitude install npd6

Summary

In this tutorial we learn how to fix npd6 command not found error in Ubuntu / Debian / Kali Linux or Raspbian distribution.