Routing additional IPs through tunnel?

jBarrel

New Member
Jan 12, 2025
1
0
1
Hello everyone,

First of all, let me say that I’ve tried searching (I’ve searched extensively on the forum and the internet for weeks, but I haven’t been able to find a working solution).

Here’s my issue:
I have a host running Proxmox (OVH) with 3 IPs – the main IP dedicated to Proxmox management, one IP assigned to a VM, and another IP that I use on an internal LAN (vmbr1) for NATed VMs that I use for my services. I also have a container running Nginx Proxy Manager as a reverse proxy for the services that need to communicate with the outside world.

Now, I need additional IPs, and I’d like to use a VPS (from a different provider) as an “IP donor.”

I want to set up a dedicated bridge (e.g., vmbr2) so that all VMs created with this bridge can use the IPs routed through the tunnel. I’ve tried configuring a GRE tunnel as well as WireGuard, and in both cases, Proxmox and the VPS communicate perfectly using the internal network. However, the VMs don’t have internet access, and I can’t figure out what I’m doing wrong.

Has anyone ever faced a similar need? Is there any tutorial or guide I can follow?

Thanks in advance!
 

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