ircd-irc2 software package provides The original IRC server daemon, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install ircd-irc2
ircd-irc2 is installed in your system.
Make ensure the ircd-irc2 package were installed using the commands given below,
$ sudo dpkg-query -l | grep ircd-irc2 *
You will get with ircd-irc2 package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Network |
| Package | ircd-irc2 |
| Version | 2.11.2p3~dfsg-4 |
| Description | The original IRC server daemon |
| Sub Section | Net |