There's lot of people who use Nethserver as Firewall/Gateway/Router, and need Avahi to:
- Make all the firewall rules in the easy way.
- Make connected ressources ( computer, printer, services...) discoverables for any machines; Even for a guest smartphone, a guest tablet to sent a file on a webdav ressource or print something.
- Because any consumer routers have this fonction available, so Nethserver which is lot of more, must have too.
Really, Avahi make things easy and deserve to be a standalone package for the next Nethserver version.