I am able to establish a mobile broadband connection but I still don't have access to internet. The mobile broadband works without any issues from Windows 7 on the same machine.
I configured the mobile broadband connection in the unity network manager. I chose the only available device, "Dell DW5550", provided my country and ISP and specified "MMS" as the plan.
When I choose the mobile broadband connection it says "connection established" and appears to have an IP address:
$ ifconfig usb0 Link encap:Ethernet HWaddr 02:80:37:ec:02:00 inet addr:172.29.128.133 Bcast:172.29.128.255 Mask:255.255.255.128
but I cannot resolve any internet host names:
$ nslookup google.com ;; connection timed out; no servers could be reached
How can I diagnose and/or solve this issue?