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

I am having a problem with my Ubuntu 12.4. Basically, while I can connect fine with a "normal" wireless access point, I am having great difficulty connecting to anything else -- neither with my Android Phone withing as an AP (stock Android 4.0.4 kernel 3.0. and with a tiny Telstra access point.

I am actually in hospital looking after my wife who just had an emergency C section, so spending time tinkering with things is a little complicated -- help!

Here is the log of what happens. From what I understand, authentication goes through but then the DHCP client fails to obtain an IP address. Both the Telstra AP and the Android phone used to work. I tried using another computer, again with Ubuntu 12.4 (the one my wife is meant to use in hospital!), but nothing.

Can somebody please help? Here is the log:

This is what happens if I try to run dhclient manually while teh connection is being established (so wlan1 is there)...

$ sudo dhclient -v wlan1
Internet Systems Consortium DHCP Client 4.1-ESV-R4
Copyright 2004-2011 Internet Systems Consortium.
All rights reserved.
For info, please visit

Listening on LPF/wlan1/e0:94:67:0a:a4:40
Sending on LPF/wlan1/e0:94:67:0a:a4:40
Sending on Socket/fallback
DHCPDISCOVER on wlan1 to port 67 interval 3
DHCPDISCOVER on wlan1 to port 67 interval 3
DHCPDISCOVER on wlan1 to port 67 interval 3
DHCPDISCOVER on wlan1 to port 67 interval 6
DHCPDISCOVER on wlan1 to port 67 interval 9
share|improve this question

Some wireless providers block internet access through your phone if you aren't subscribed to a package which has tethering. There are apps in the Google Play store that may be able to help you alleviate this problem, such as FoxFi

share|improve this answer
This is happening with a Telstra Access Point, which has the sole purpose of giving access to the net to a bunch of computers via 3g... – Tony Mobily Oct 7 '12 at 7:46
This problem is presenting with a Telstra access point, which has only one goal: allow a bunch of computer to share an Internet connection using 3G. – Tony Mobily Oct 7 '12 at 7:46

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.