Ubuntu – Network service discovery disabled: What does this mean for me

networkingserviceswireless

Every time at boot I get a message “Network service discovery disabled. Your current network has a .local domain, which is not recommended and incompatible with the Avahi network service discovery. The service has been disabled.”

Network service discovery disabled

What does this mean for me?

Wi-Fi is disabled.

Best Answer

It looks like avahi-daemon is started when the network connection is established (/etc/network/if-up.d/avahi-daemon). This notification is informing you that mDNS (Avahi) has been disabled. It's only used for a small number of applications that only work on the local network, it won't adversely affect your internet connection or DNS.

The most well known use for mDNS is sharing music with Rhythmbox (or iTunes) over your LAN. It's an Apple technology, but it's largely been ignored in favour of uPNP or DLNA.

To disable it, you must edit the file /etc/default/avahi-daemon as root:

sudo -i
gedit /etc/default/avahi-daemon

and add this line (or change it if already exists to):

AVAHI_DAEMON_DETECT_LOCAL=0

Source: http://ubuntuforums.org/showthread.php?t=1632952

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Ubuntu – How to disable network printer discovery in Ubuntu 18.04

Answering my own question, the only solution I found so far is disabling avahi:

sudo systemctl stop avahi-daemon.service
sudo systemctl disable avahi-daemon.service
sudo systemctl stop avahi-daemon.socket
sudo systemctl disable avahi-daemon.socket

I would love a better solution of course.

Best Answer

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Ubuntu – How to disable network printer discovery in Ubuntu 18.04

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