Skip to content

Network Setup Guide

When you create a virtual machine (VM), it automatically receives a fixed IP from the selected network, which could be a private network you create or one of Infomaniak's pre-configured public networks:

  • ext-net1 (Dual Stack): Assigns both a public IPv4 (billed) and a public IPv6 (free) to your VM. This dual-stack setup allows your VM to communicate over both IP protocols.
  • ext-v6only1: Assigns only a public IPv6 (free). Ideal if IPv4 isn't needed.
  • ext-floating1: Provides a billed floating IPv4 address, which you can map to a private IP via NAT.

IPv6 is free across all networks, while IPv4 services incur charges.

Advanced configurations are available upon request only:

  • ext-provider1: Provides a reserved public IPv4 range.

Understanding Dual Stack Networking

A dual stack network enables your VM to operate with both IPv4 and IPv6 addresses simultaneously. This is crucial for ensuring compatibility across different parts of the internet, as some services and clients may only support one protocol.

In Infomaniak’s ext-net1 network, each VM receives both a public IPv4 (which incurs charges) and a public IPv6 (free of charge). This setup ensures seamless connectivity, whether the destination network or service uses IPv4 or IPv6.

graph TD
    A[OpenStack Project] --> B[Dual-Stack Network]
    B --> C[IPv4 Subnet]
    B --> D[IPv6 Subnet]
    C --> E[Subnet Pool IPv4 - 192.168.0.0/16]
    D --> F[Subnet Pool IPv6 - 2001:db8::/48]
    E --> G[Router]
    F --> G
    G --> H[External Network]

This flexibility makes dual-stack an excellent choice for modern cloud deployments where broad compatibility and future-proofing are essential.