Connecting to Adhoc Wifi I setup adhoc connection in Ubuntu Linux. How can we connect android devices (2.3.3 and 4.0) to the adhoc wifi internet connection?
Simple answer: Android does not support Ad-Hoc networks by default (see also the ad-hoc-networks tag-wiki, which tells you this and more). This means, you will need to root your devices, and use an app for this specific task, which is known as reverse-tether.

Some solutions are summed up in the following questions (or rather in their answers):


How to share internet among 2 android devices?
Enable Adhoc on Jelly Bean
Connect android phones through adhoc wifi network
How can I establish an AD-HOC Wi-Fi connection on my tablet?


As I did not use this method (had no need for it), I'm not sure what "easy solutions" really do. But if I remember correctly, OpenGarden's WiFi Tethering supports this, as does MANET Manager.