An addition to my previous post.

I have added 1Gb more RAM to node2 and retried my test. Dtnrecv still terminates with the "Aborted." message.
It seems that a memory leak takes place.

Is there any way I can debug this case?

Thu, 04 Oct 2012 14:06:27 +0400 от Sergey Sireskin <sire@mail.ru>:

Hello, IBR-DTN developers and users!

I suspect that IBR-DRN does excessive work on copying files while doing dtnrecv.

....

Best Regards,
Sergey Syreskin