ndpmon software package provides IPv6 Neighbor Discovery Protocol Monitor, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install ndpmon
ndpmon is installed in your system.
Make ensure the ndpmon package were installed using the commands given below,
$ sudo dpkg-query -l | grep ndpmon *
You will get with ndpmon package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Network |
| Package | ndpmon |
| Version | 1.4.0-2 |
| Description | IPv6 Neighbor Discovery Protocol Monitor |
| Sub Section | Net |