@JaredBusch said in ZeroTier Question:
At the very core of it is a Linux kernel of some flavor, but that just used to load their own vmkernel.
No Linux at all. Never was. Long ago there was Linux in the host VM (Dom0 equivalent) but never in the ESX product itself. That was just a VM on top of ESX that provided a GUI. But that was removed long ago and now there isn't even that.