Hi, 

I wonder if anyone can help.  I have 5 Isilon NL410 nodes which I am attempting to reimage and join to an existing cluster running at v9.1.x.  I can successfully reimage the nodes with the v9.4 and v9.5 reimage bundles but anything lower and they fail.  I get the following error upon boot:

Verifying hardware configuration... 

<isi_rc> Executing script nfsd
Unable to get frontend NIC list. PSI key does not exist: network.interfaces.frontend
Unable to get frontend NIC list. PSI key does not exist: network.interfaces.frontend
Unable to get frontend NIC list. PSI key does not exist: network.interfaces.frontend
Unable to get frontend NIC list. PSI key does not exist: network.interfaces.frontend
Unable to get frontend NIC list. PSI key does not exist: network.interfaces.frontend

            Critical Error: Unsupported OneFS release and invalid hardware configuration!
            Node is an unknown hardware version.!
            Contact Dell EMC Customer Support immediately.
            ok

Thanks

Paul