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Barracuda Load Balancer

How to Use the Internet Protocol Version 6 (IPv6) with Barracuda Load Balancer

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The Barracuda Load Balancer supports IPv6 as well as IPv4; this article describes how to use IPv6.

To enable IPv6 support, go to the BASIC > IP Configuration page and enable it. Using the same page, assign IPv6 addresses to the relevant interfaces. Only then can you connect to an IPv6 network.

The following table lists the combinations of IPv6 and IPv4 interfaces to Services and Real Servers that can be used when IPv6 is enabled:

VIP AddressReal Server AddressesUse Case
IPv6IPv6Used when the complete network setup is being migrated to support IPv6 based addressing.
IPv6IPv4Used when you wish to publish IPv6 addresses for web applications without changing the addressing in your internal network.
IPv4IPv6Used when third party applications connecting to your applications are not yet ready to communicate via IPv6.
IPv4IPv4Used in current deployments without any IPv6 support.

IPv6 is not supported in these two areas:

  • Connecting to the Barracuda Networks Technical Support Center via a support tunnel is not possible using IPv6 addresses. If you need to do this, make sure you have IPv4 addresses configured for the WAN and LAN IP addresses on the BASIC > IP Configuration page.
  • IPv6 addresses cannot be configured on the Administrative Console.
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