flex.planeflex.plane
Virtual Machines

Network Interfaces

Connect and disconnect VMs from virtual networks.

Each VM can have up to 4 network interfaces, each connected to a different virtual network. You can add and remove network connections after the VM is created.

Connect to a network

To attach a new network interface to a VM:

  1. Navigate to the VM's detail page and open the Networks tab.
  2. Click Connect Network.
  3. Select the target network from the dropdown.
  4. Optionally enter a static IP address. If you leave it blank, flex.plane automatically assigns the next available address.
  5. Click Connect.

The connect network form lets you choose a network and optionally specify a static IP address.

The static IP must be within the network's subnet and not already assigned to another VM. If it is already taken, the operation returns an error.

Disconnect from a network

To remove a network interface:

  1. Navigate to the VM's Networks tab.
  2. Find the interface you want to remove.
  3. Click the disconnect action.

The IP address is released and becomes available for other VMs.

Disconnecting a network interface removes the VM's connectivity to that network immediately. Make sure the VM does not depend on the network for critical services before disconnecting.

Manage multiple interfaces

VMs support up to 4 network interfaces (slots 0 through 3). This lets you build multi-homed configurations, for example a VM with a frontend network for web traffic and a backend network for database connections.

The Networks tab shows all connected interfaces with their network name, assigned IP address, and MAC address.

The Networks tab displays each connected interface with its network, IP address, and MAC address.

A common pattern is to use separate networks for different traffic types: one for management/SSH access, one for application traffic, and one for storage or database traffic. This gives you network-level isolation without running multiple VMs.
The 4-interface limit is a hard constraint from the underlying Proxmox platform. If you need more network segmentation, consider running additional VMs.

Manage Disks

Attach, detach, and resize virtual disks.

VM Firewall

Configure per-VM inbound and outbound firewall rules.