esxcli network nic list
ESXi-Customizer-PS-v2.4 script will help you to create a customized installation ISO that has the necessary packages already included! However, right now this is only possible if you have the ESXi 6.0 Offline Bundle available. Run a command like
C:\TEMP\ESXi-Customizer-PS-v2.3.ps1 -izip C:\TEMP\VMware-ESXi-6.0.0-20150701.zip -vft -load net51-8168,sata-xahci