
Short version: when the HNP launches VPID 0 on the same node as itself, the STDIN IOF endpoint will have both a pub and a sub on it. We need to ensure to only forward incoming messages ''once'' (not twice, as was happening). A lengthy comment in the code explains in more detail. This commit was SVN r18873. The following Trac tickets were found above: Ticket 1135 --> https://svn.open-mpi.org/trac/ompi/ticket/1135