libavahi-common3 software package provides Avahi common library, 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 libavahi-common3
libavahi-common3 is installed in your system.
Make ensure the libavahi-common3 package were installed using the commands given below,
$ sudo dpkg-query -l | grep libavahi-common3 *
You will get with libavahi-common3 package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Libraries |
| Package | libavahi-common3 |
| Version | 0.6.31-4ubuntu1 |
| Description | Avahi common library |
| Sub Section | libs |