network connection lost ubuntu 7.10

Asked by javierzinho on 2007-12-20

Hi I'm a newbie in ubuntu-linux, I installed 7.10 on a brand-new Dell inspiron 1420 with a wired network connection in my university.
First two weeks: everything went fine, with the default Ubuntu settings I had full connection to the local (windows) network and to the internet,
Third week: internet connection lost, but changing the roaming mode to DHCP in every session the internet connection was recovered (but in the next session was lost again).
Fourth week: no internet no local network, the change in the DHCP does not work.
I have no experience neither knowledge in networks, I'm simply a chemist, but some info that I have found in forums suggests it could be something related with ipv6 connection, but sincerely I have no ideal about what ipv is. How can I recover my network connection? (The guy in charge of the network claims he is responsible only for windows machines, and my problems are my fault).

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Olivier (olivier-lacroix) said :
#1

Hi !

please post the output of the following commands

ifconfig

cat /etc/network/interfaces

sudo killall NetworkManager
sudo NetworkManager --no-daemon

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javierzinho (javica100) said :
#2

Well, it seems that the administrator had been tinkering with the network settings for the past two weeks, and right now they finished and everything work well again.