Control: retitle 845594 "openmpi: lo interface broken in the tcp btl"
Hi, Actually the regression can also be demonstrated without using MPI_Comm_spawn with: mpirun -np 2 --mca btl_tcp_if_include lo --mca btl tcp,self ./slave The above command runs fine under jessie (openmpi 1.6.5-9.1) but fails under sid. For the record my test environment is a production machine for jessie and a virtualbox virtual machine for sid. Kind regards, Thibaut.