i see what you are trying to do. Hmm ..typically with software iSCSI initiator there is only one IQN per host so unless you can get Open-E to assign unique IQN to each NIC, CX3 will think it's the same host and not allow you register it as unique host because it already knows about that IQN and has already registered as another host name. CX wants to treat this as multipathing solution where you are trying to do exactly the opposite. Is Open-E some flavor of Linux/Open BSD ?
Scenerio:  Open-E doesnt currently have the option to have multipath on its initatior portion (This is a bug and it is getting fixed something early next year). in lieu of this I am attempting to setup each NICs (4 total) to 4 differant ISCSI ports on the CX3-20, and than create a storage group for each NIC with unique LUNS on each. I have been having issues going this route because of only 1 host is allowed per storage group, I know I can attach multiple LUN per group but Open-E see's each LUN as a unique LUN and doesnt combine despite having the same ID's.  I want to make sure there isnt a way to manually register based on IP and bybass the host name portion.  Example:  Nic 1 --> SPA Eth0 (Lun 1-4) NIC 2 --> SPA Eth3 (Lun 5-9) Nic 3 --> SPB Eth0 (Lun 10-14) Nic 4 --> SPB Eth3 (Lun 15-19)  Thanks for your help.
CX3-20 and Open-E (No MultiPath)