On 28.04.2014, at 22:11, Ghada Jaber <jaberghada@yahoo.fr> wrote:

Hello 

I've installed the application of ibr-dtn  (ubuntu version) on two laptop and i want to test the connexion between the two . 
How can i interconnect them ? Using wifi or ethernet port ? ad-hoc mode ? 

All these methods methods will work.  So i really depends on what is suitable for your application. We found some recent WiFi chipssets have trouble with multicast in ad-hoc mode, so depending on the hardware in that case discovery might be a problem (static neighbors could be used as an alternative)