Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

When I did a dist-upgrade of my ubuntu 10.04 server, it automatically installed Decnet, and it trew up ncurses based configuration wizard.

I have never heard of Decnet, but I followed the instructions in the wizard, and accepted for it to be installed, and it lead to the disconnection of 2 of my internet uplinks, and the hosted website stopped responding on WAN side. Then I purged Decnet, and rebooted the server, and everything went normal.

So why did my server install Decnet when I did dist-upgrade?

share|improve this question
You don't really say what you were upgrading from, is it to 10.04 or to a point release? – Jorge Castro Sep 23 '11 at 18:17
I was doing sudo apt-get dist-upgrade. It's just installing software package updates. – nixnotwin Sep 24 '11 at 0:59

I can confirm this issue.

I upgraded from Natty to Oneiric. And during the upgrade I got the ncurse-based configuration wizard, which suggests to skip configuration (which I did). After the next reboot my ethernet based network was broken, too.

I fixed my system like this:

# apt-get remove dnet-common libdnet
# rm /etc/init.d/decnet

To bring the ethernet up again: (without rebooting)

# dhclient3 eth0

I assume that an obscure network library which was upgraded caused this. For example libroar1 depends on libdnet. Perhaps some upgraded package started to depend on dnet-common in oneiric, when previously it was only recommended - or something like that.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.