iSNS discovery through offload ifaces fails with error 'iscsiadm: iface bnx2i.<mac-addr> is not valid'

Issue

• iSNS (Internet Storage Name Service) discovery through offload ifaces fails with iscsiadm.

• iscsiadm discovery using iSNS failed to bind with offload ifaces.
  Here is the command:

  $ iscsiadm -m discovery -t isns -p 192.168.1.2 -I bnx2i.00:0e:1e:13:1d:f1
  Error Output:
  iscsiadm: iface bnx2i.00:0e:1e:13:1d:f1 is not valid. Will not bind node to it. Iface settings [hw=,ip=,net_if=,iscsi_if=bnx2i.00:0e:1e:13:1d:f1]
  iscsiadm: No portals found