How to configure IP to be on Proxmox vps from another DC?

Question

linux

Hello!
Given:
Data center A: Server with Proxmox (1 ip)
Data center B: software or hardware solution (256 ip)
Task: install vps servers on Server 1 but so that they go out into the world through data center B

Answer 1

Option 1:
Broadcast DC A prefix to 256 addresses from DC B via BGP, which will provide the best packet path and no presence in DC A is required.
Option 2:
Organize an l2 network between two DCs (for example, using mikrotik EOIP), but in this case, the path of packets and latency will increase.

Answer 2

Raise the tunnel to release traffic through 20 center where and ip addresses