mDNS

Install mDNS on Ubuntu

To get mDNS support, you need to install the following packages:

$ sudo apt-get install avahi-daemon libnss-mdns

Edit the hosts line in: /etc/nsswitch.conf as follows:

hosts:          files mdns4_minimal [NOTFOUND=return] dns

This tells the computer to look first at the hosts file, then at mDNS.

With the above setup. your computer should be reachable at hostname.local, for example, rdu-rpi4.local.

If you would like to have a different name, you can modify the configuration file /etc/avahi/avahi-daemon.conf. Look for the lines

#host-name=foo
#domain-name=local

Uncomment the lines and update the names accordingly.