Trouble connecting to a wired network

joecr · 01-20-2010, 12:34 PM

I installed a copy of Kubuntu on my desktop at work yesterday & I was able to connect to the Internet just fine then but today when I came in I can not get an IP address, from what I can tell.

ifconfig just lists the following.
eth0 Link encap:Ethernet HWaddr 00:08:74:bc:b0:59
inet6 addr: fe80::208:74ff:febc:b059/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:278 errors:0 Dropped:0 overruns:0 frame:0
TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:17792 (17.7 KB) TX bytes:3952 (3.9 KB)
Interrupt:17

nimnull22 · 01-20-2010, 01:06 PM

Type:

Code:

dhclient eth0

joecr · 01-20-2010, 01:25 PM

Here is what I got as a result. Does that mean that this is fixed permanently or will it still be an issue?

Code:

dhclient eth0
Internet Systems Consortium DHCP Client V3.1.2
Copyright 2004-2008 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

can't create /var/lib/dhcp3/dhclient.leases: Permission denied
SIOCSIFADDR: Permission denied
SIOCSIFFLAGS: Permission denied
SIOCSIFFLAGS: Permission denied
Open a socket for LPF: Operation not permitted

nimnull22 · 01-20-2010, 01:29 PM

Code:

sudo dhclient eth0

joecr · 01-20-2010, 01:40 PM

I hope that because it didn't say "Permission denied" several times that fixed this issue.

Code:

sudo dhclient eth0
[sudo] password for jcrown:
Internet Systems Consortium DHCP Client V3.1.2
Copyright 2004-2008 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

Listening on LPF/eth0/00:08:74:bc:b0:59
Sending on   LPF/eth0/00:08:74:bc:b0:59
Sending on   Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 6
DHCPOFFER of 192.168.1.111 from 192.168.1.2
DHCPREQUEST of 192.168.1.111 on eth0 to 255.255.255.255 port 67
DHCPACK of 192.168.1.111 from 192.168.1.2
bound to 192.168.1.111 -- renewal in 35865 seconds.

nimnull22 · 01-20-2010, 01:55 PM

Can you connect to a wired network now?

joecr · 01-20-2010, 02:24 PM

Yes I just was wondering if it is likely to keep the issue from happening again. I had a different issue with a sound card where I had to do several steps every time I booted to get sound until I found some directions to permanently resolve it.

nimnull22 · 01-20-2010, 02:38 PM

Actually it should not happen. Because "dhclient" executes by Network Manager, when it brings interface "up"
May be it just failed to get IP addresses, how knows.

If it happen again, just execute "sudo dhclient eth0", or write here, may be someone who like ubuntu|kubuntu will explain to you.

joecr · 01-20-2010, 04:46 PM

Well I was just forced to reboot it & it was still working so hopefully it is totally resolved. Thanks for the help that made things much easier to work.