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Issue (and help) with fresh MPSS install

I had some issues with my MIC cards, and decided to update my OS (Centose 7) and reinstall MPSS to the latest version.  Of course, I now have some problems. The MPSS installed fine, and most aspects are working, but the bridge between the host and mic cards is not working.  I can run MPI code on the host, or on all of the mic cards, but I can not run code on host+mic cards.  I'm guessing this is cause by using NetworkManager instead of network.  Although I tried to change over to network from NetworkManager as recommended, when I try to start network, I get the following problems.

Aug 04 18:42:12 axial network[26012]: RTNETLINK answers: File exists
Aug 04 18:42:12 axial network[26012]: RTNETLINK answers: File exists
Aug 04 18:42:12 axial network[26012]: RTNETLINK answers: File exists
Aug 04 18:42:12 axial network[26012]: RTNETLINK answers: File exists
Aug 04 18:42:12 axial systemd[1]: network.service: control process exited, code=exited status=1
Aug 04 18:42:12 axial systemd[1]: Failed to start LSB: Bring up/down networking.
Aug 04 18:42:12 axial systemd[1]: Unit network.service entered failed state.
Aug 04 18:42:12 axial systemd[1]: network.service failed.

I realize this is probably a linux problem, which may be related to the DHCP client, but I have yet to fix the problem.  Suggestions?

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