$ sudo apt-get update
$ sudo apt-get install avahi-dnsconfd 

avahi-dnsconfd is installed in your system.

Make ensure the avahi-dnsconfd package were installed using the commands given below,

$ sudo dpkg-query -l | grep avahi-dnsconfd *

You will get with avahi-dnsconfd package name, version, architecture and description in a table

avahi-dnsconfd package basic information: