Auto-Connecting Ubuntu to Ad-Hoc Connection

The Odroid U3 has Ubuntu 14.04 LTS Desktop version installed on its eMMC card.

In order to have an ad-hoc connection automatically connected on boot of the OS do the following steps:

1. Edit /etc/network/interfaces, add these lines to the bottom and make sure there is no other configuration for your WiFi interface.

   auto wlan3
   iface wlan3 inet static
     address 192.168.1.1
     netmask 255.255.255.0
     wireless-essid odroid
     wireless-mode ad-hoc
     wireless-key 1234567890
   

2. Edit /etc/NetworkManager/NetworkManager.conf, this should be a template for how to restrict the Network Manager to manage your WiFi interface.

   [main]
   plugins=ifupdown,keyfile,ofono
   dns=dnsmasq
   
   
   [ifupdown]
   managed=false
   
   
   [keyfile]
   unmanaged-devices=mac:00:13:d4:c0:62:db
   

   Where 00:13:d4:c0:62:db is my WiFi interface MAC address.

More: ad-hoc, ubuntu, wireless