I have setup a vmware vsphere 6 lab with one physical ESXi host with some nested ESXi hosts. My physical host has 4 NICs in total which I have only connected 2 of them, one to my LAN and the other to my NAS network. I have configured 2 virtual switches on my Physical host but there is only 1 port group available for my virtual ESXi hosts and other virtual guests. I want to be able to add a second NIC to these guests but they are not available.
Why is this happening?