CORE does not properly connect to all hosts in large distributed scenario

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What steps will reproduce the problem?
1. Create 20 node distributed test, with 1 NEM per emulation host (i.e., 20 
physical systems, each running 1 NEM)
2. Connect them with RFPIPE, enable OLSR service
3. Press start

What is the expected output? What do you see instead?

Expected: all hosts turn green and then bars disappear.  Connectivity between 
all hosts should be present.

One host (usually 11 but sometimes 19) stays red.  It does not appear in routes 
or join the emulated network.

What version of the product are you using? On what operating system?
4.7svn6, Ubuntu 12.04.4 LTS


Please provide any additional information below.

lsof reports a TCP connection between the host running core-gui and the host 
whose NEM is red.  EMANE is launched and emanetransportd is running.

Original issue reported on code.google.com by [email protected] on 10 Jul 2014 at 6:09