How to configure a flexible IPv6 on an Elastic Metal server

The configuration of a flexible IPv6 depends on the Linux distribution running on your Elastic Metal server. This guide covers the steps for configuring your flexible IPv6 on machines running Debian, Ubuntu, or CentOS.

Before you startLink to this anchor

To complete the actions presented below, you must have:

• A Scaleway account logged into the console
• Owner status or IAM permissions allowing you to perform actions in the intended Organization
• An installed Elastic Metal server

How to configure IPv6 on DebianLink to this anchor

1. Open the network configuration file /etc/network/interfaces in a text editor and edit it as follows:

   auto eno1
   iface eno1 inet6 static
       address IPV6_ADDRESS
       netmask 64
   

   Replace eno1 with the correct internet interface name.

2. Restart the network:

   sudo systemctl restart networking.service
   

How to configure IPv6 on UbuntuLink to this anchor

Ubuntu uses netplan for network configuration since Ubuntu 18.04 LTS. Netplan configuration files are written in YAML and located in the /etc/netplan directory. Refer to the official netplan documentation for more information.

1. Open the default configuration file /etc/netplan/01-netcfg.yaml in a text editor and edit it as follows:

   # This is the network config written by 'subiquity'
   network:
     ethernets:
       eno1:
         critical: true
         dhcp-identifier: mac
         dhcp4: true
         addresses: [ "IPV6_ADDRESS/64" ]
         nameservers:
           addresses:
             - "2001:bc8:1008:1::16"
             - "2001:bc8:1008:1::16"
           search:
             - online.net
     version: 2
   

   • Replace eno1 with the correct name of your internet interface.
   • Replace the IP addresses of the resolving DNS servers (nameservers) with the ones located in the same geographical location as your machine for best perfomances.
   Note

   The configuration example above is valid for the main IP address of your Dedibox server. For IPv6 on a virtual machine, use the unique gateway for the failover IPv4.

2. Check and validate your configuration file:

   sudo netplan try
   

3. Apply the new configuration:

   sudo netplan apply
   

4. Test the connection with a ping to an external host:

   ping6 google.com
   

How to configure IPv6 on CentOSLink to this anchor

1. Open the automatically generated configuration file for your internet interface in a text editor, for example /etc/sysconfig/network-scripts/ifcfg-eth0 and edit it as follows:

   # Generated by parse-kickstart
   UUID=xxxxx
   DNS1="51.159.47.28"
   IPADDR="DEDIBOX_MAIN_IP"
   GATEWAY="DEDIBOX_MAIN_IP_1" # The IPv4 gateway is your server's main IP address ending in .1 (e.g., if your server's IP is 62.210.16.123, the gateway is 61.210.16.1)
   NETMASK="255.255.255.0"
   IPV6ADDR="IPV6_ADDRESS/64"
   IPV6_AUTOCONF="yes"
   BOOTPROTO="static"
   DEVICE="eth0"
   ONBOOT="yes"
   IPV6INIT="yes"
   

2. Restart the networking service:

   sudo systemctl restart network.service
   

3. Test the IPv6 connection with a ping to an external host:

   ping6 google.com