When you run the ldm list-io -l command on a system that has a PCI Express Dual 10-Gigabit Ethernet Fiber card (X1027A-Z) installed, the output might show the following:
primary# ldm list-io -l ... pci@500/pci@0/pci@c PCIE5 OCC primary network@0 network@0,1 ethernet ethernet
The output shows four subdevices even though this Ethernet card has only two ports. This anomaly occurs because this card has four PCI functions. Two of these functions are disabled internally and appear as ethernet in the ldm ls-io -l output.
You can ignore the ethernet entries in the ldm list-io -l output.