But if you have 100 backend servers that mostly communicate on the internal network/VPC and need their IPv4 mostly for updates, it seems easy to justify standin

But if you have 100 backend servers that mostly communicate on the internal network/VPC and need their IPv4 mostly for updates, it seems easy to justify standing up a proxy and reconfiguring your template. At least if your engineers aren't in Silicon Valley and thus don't cost you $400/h.