gdnsd software package provides authoritative domain name 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 gdnsd
gdnsd is installed in your system.
Make ensure the gdnsd package were installed using the commands given below,
$ sudo dpkg-query -l | grep gdnsd *
You will get with gdnsd package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Network |
| Package | gdnsd |
| Version | 2.2.0-1ubuntu1 |
| Description | authoritative domain name server |
| Sub Section | Net |