How to set up a GRE tunnel with network announcement?

Question

Computer networks

Hello!
The essence of the question is this: there is a server in one DC, this server has a /24 network (there is no access to network equipment), and there is also a second server in a completely different DC.
Task: in the second DC, cut the server into a VPS (KVM) with the ability to use IP from the first server.
Question: is it possible to raise a GRE tunnel with the ability to announce IP to these very VPSs in the second DC?
I would be very grateful if anyone can share some documentation.

Answer 1

Well, you can build GRE in the second data center, route a subnet from this / 24 there, assign addresses to the VM from it. Only traffic will still go through the first data center. From here quite reasonable question - what for there white addresses and than will not arrange nat? And what about Broadcast?