Last change on 2021-05-18 • Created on 2020-03-18 • ID: RO-10F98

Additional IPs with Virtualization Solutions

The network setup of all virtualization solutions is similar. Depending on the software, you can use one or more variants:

  1. Bridged
  2. Routed
  3. NAT

Single IPs

If you want to use the bridged mode, and you need additional single IPs, you need to request virtual MAC addresses. You can get a MAC address for your additional single IP by going to your Robot account. Simply login, select your server, and then go to the IPs tab. Here, you will see a small button next to the additional single IP address. Clicking on that button will give the IP address a virtual MAC.

You can request virtual MAC addresses only for individual IPs, not for subnets.

Bridged Routed NAT Special
Linux KVM (also Proxmox) / Xen x x x -
OpenVZ (also Proxmox) / Virtuozzo x1 x1 x1 x2
VMware ESXi x
Microsoft Hyper-V x x3 x3
  1. Applies only to veth devices
  2. Applies only to venet devices
  3. Requires RRAS (Routing and Remote Access) services


If you want to use IPs in a subnet with a virtualization solution that does not have routing capabilities, you need to use a VM to perform this function. You need to then route the subnet on this VM.

Direct Routing Router VM
Linux KVM (also Proxmox) / Xen x (x)
OpenVZ (also Proxmox) / Virtuozzo x (x)
VMware ESXi x
Microsoft Hyper-V x (x)

(x) - You can use a router VM, but it's not necessary.

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