rdnssd software package provides IPv6 recursive DNS server discovery daemon, 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 rdnssd
rdnssd is installed in your system.
Make ensure the rdnssd package were installed using the commands given below,
$ sudo dpkg-query -l | grep rdnssd *
You will get with rdnssd package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Network |
| Package | rdnssd |
| Version | 1.0.1-1ubuntu1 |
| Description | IPv6 recursive DNS server discovery daemon |
| Sub Section | Net |