Thanks for the response and help.
I am wondering if i can setup a GRE tunnel end point in ESXi hypervisor, either from DVS configuration
or from outside it like a vmknic.
My objective is as follows:
server-1 has a VM.
This VM has internal non-routable ip address.
server-2 has a VM.
This VM has internal non-routable ip address.
I want to connect these 2 servers using a GRE tunnel which will have routable reachable ip address.