inetutils-inetd software package provides internet super server, 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 inetutils-inetd
inetutils-inetd is installed in your system.
Make ensure the inetutils-inetd package were installed using the commands given below,
$ sudo dpkg-query -l | grep inetutils-inetd *
You will get with inetutils-inetd package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Network |
| Package | inetutils-inetd |
| Version | 2:1.9.4-1build1 |
| Description | internet super server |
| Sub Section | Net |