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Table of Contents

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Abiquo supports IPv6 networking in the Abiquo UI and API.Users can create Abiquo privatefor private, public, external and unmanaged IPv6 networks via GUI and API.

In the GUI, cloud users will be able to use IPv6 networks in the same way as IPv4 networks are used. Addresses will be listed and selected through the GUI.

If you wish to use Abiquo (and a DHCPv6 server) to assign addresses, IPv6 will require one DHCPv6 server for each datacenter. This means that each datacenter needs a remote services with both an IPv4 and IPv6 DHCP server running. The DHCP and DHCPv6 servers may be running on the same machine.

The implementation covers . It supports any valid IPv6 address format (short or long) . It also covers and the creation of IP addresses with most of the transitional IPv6 technologies: IPv4-mapped, IPv4-compatible, Teredo and ISATAP. This first version has limitations on the number of IPv6 NICs per virtual machine.

Full implementation diagram: ipv6.png

Use Cases of Abiquo IPv6

There are two main use cases for IPv6 in Abiquo: Automatic generation of IPv6 address and Manual entry of IPv6 address. These two use cases are distinguished in Abiquo by the strict parameter. When strict = true, Abiquo enforces EUI-64 IP address generation. 

 Strict NetworksAbiquo automatically generates IPv6 address
Description
  • Abiquo can automatically generate the host-specific part of the IP to the EUI-64 standard
  • Abiquo uses the MAC of the virtual machine to automatically generate the Host ID
    • When the MAC is not yet available from the hypervisor (prior to deploy of public and external networks), Abiquo supplies a placeholder IP
      • The placeholder IP:
        • displays as a question mark "?"
        • will be replaced with a real IP when the virtual machine is deployed
Strict network?Network parameter strict = true
Router advertisement
system
  • You must always configure the network in the router advertisement system for all IPv6 network types
    • Unmanaged networks will usually receive their IPv6 addresses from the router advertisement system
    • Public, external and private strict networks can also receive stateless IPv6 addresses from this system based on their MACs
      • the DHCP server is not required, because Abiquo will generate and display the same IP addresses as the router advertisement system
DHCPv6
  • In general, DHCPv6 is required to supply DNS information to the virtual machines
  • DHCPv6 can be used to supply IPv6 addresses to the virtual machines
  • The addresses generated by the router advertisement system from the MACs of the virtual machines should be the same as those generated by DHCPv6
    • When a router advertisement system is used to assign the IPv6 address, the correct addresses should still be displayed in Abiquo
Placeholder IPs
  • EUI-64 requires the MAC from the hypervisor
    • A placeholder IP is used until the MAC is provided by the hypervisor at deploy time
      • The placeholder IP is represented by a "?"
 Non-strict NetworksUser may manually enter IPv6 address
Description
  • You can manually enter an IPv6 address in Abiquo
    • This address must be valid for the IPv6 network
  • Cloud users can select from these IPv6 addresses when configuring their virtual machines
Strict network?Network parameter strict = false
Router advertisement
system
  • You must always configure the network in the router advertisement system for all IPv6 network types
DHCPv6
  • DHCPv6 service is required to supply IPv6 addresses and DNS information to the virtual machines
  • DHCPv6-ready templates are required:
    • Windows: configure DUID in registry
    • Unix: configure dhcpv6 client and firewall/security
  • The DHCPv6 service can assign static addresses
    • 1 x IPv6 address to a Windows virtual machine
    • Multiple IPv6 addresses to a Unix virtual machine with appropriate template configuration 
Automatic IPv6
generation
is also supported
  • Abiquo can also automatically generate an IPv6 address for non-strict private, public and external networks
    • If the MAC is available, generate an IPv6 address in EUI-64 format
    • If the MAC is not available, (prior to deploy in external or public networks), generate a random IPv6 address

A basic sample configuration for testing the Manual IP entry use case is available from Abiquo Support.

To use Abiquo and a DHCPv6 server to assign addresses, IPv6 will require one DHCPv6 server for each datacenter.  The DHCP and DHCPv6 servers may be running on the same machine. Cloud users will be able to work with IPv6 networks in the same way as IPv4 networks with addresses listed and selected through the user interface.

Full implementation diagram: ipv6.png

Abiquo supports two use cases of IPv6: "strict" networks that enforce EUI-64 IP address generation and manual address entry. See 

 Preparation for Abiquo IPv6

Router Advertisement System for All Networks

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In effect, with strict networks where the allocation of EUI64 addresses is enforced, the addresses that will be assigned by the router advertisement system based on the MAC are predictable. So the address generated and displayed in Abiquo should be the same as the one allocated by the router advertisement system. This means that the DHCP is not necessary for strict networks.

DHCP v6 Service

When you create a standard Abiquo datacenter, a DHCPv6 service is automatically added. This service is required for IPv6 networks.  Image Removed Note that in strict networks the addresses assigned by the router advertisement system based on the MAC are predictable. So the address generated and displayed in Abiquo should be the same as the one allocated by the router advertisement system.

Change DHCP v6

You can change the DHCPv6 remote service to another server via the GUI or via the API. First delete the existing service, then use the GUI or an API request similar to the one below to add a new DHCPv6 server. Note that the remote service type is "DHCPv6".

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Configure your templates so that your virtual machines will run the DHCPv6 client to retrieve the assigned IP address. Note that with a suitable configuration of the DUID of the virtual machine template, more than one NIC with an IPv6 address can be assigned to a Linux virtual machine. But only one NIC with an IPv6 address can be assigned to a Windows virtual machine.

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titleConfigure Windows DUID

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If you are using a Windows template, configure the DUID in the registry.

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titleConfigure CentOS Security

 If you are using a

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CentOS

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virtual machine template, remember to correctly configure SELinux and IP tables to ensure connectivity.

Create an IPv6 Network using the UI

Go to the Public or External Networks tab of your datacenter or the Private networks tab of your virtual datacenter to create an IPv6 network.Image Removed

See Manage Public Networks, Manage External Networks, Manage Unmanaged Networks and Manage Private Networks for more information.

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More than One IPv6 Address in Unix

Modify the template to dynamically generate a DUID using a predictable method of DUID is equal to MAC. This means the template must generate the DUID of the DHCPv6 client with the method "DUID Based on Link-layer Address [DUID-LL]", to enable the Unix virtual machines to receive more than one IP address through DHCPv6.