After installing zerotier I found that vmware/virtual box vms had no network access. Vmware/vbox pick the zerotier adapter to bridge with then can’t get out to the world. For vmware I created a new VMnet set to bridge to the machine physical network that goes to the world then changed the VM to use that net adapter. For VirtualBox under the network for the VM there is a popup, change it from zerotier to your real world interface.
I wonder how to flag the zerotier net to say it should not be be picked… I guess vmware sees it has a gateway IP and picks it?