Client IPv6 Support

  • Updated on May 12, 2025
  • Published on Mar 25, 2025
  • 1 minute(s) read
Prev Next

Overview

The Client IPv6 Support rule lets you enable or disable IPv6 support for all site hosts. By default, client IPv6 support is enabled.

  • Enabled: The CDN responds to DNS queries with an AAAA record, allowing IPv6-capable clients to connect over IPv6.

  • Disabled: The CDN responds with only an A record (IPv4), forcing all traffic to use IPv4 even if the client supports IPv6.

This is a site-wide setting. Defining the rule for one host affects all hosts. This rule cannot be applied to individual hosts or paths.

Configure the Rule

Here, we'll describe how to configure the rule with the Delivery Service Management UI.

API Users may choose to build the site configuration offline.

To configure a Client IPv6 rule:

  1. Navigate to the Select Rule dialog.

  2. In the Select Rule dialog, choose Client IPv6 Support.

  3. Toggle Client IPv6 Support on or off.

    ipv6SupportRule.png

  4. Choose Add Rule.

    This setting is automatically applied to all the site hosts.

SVTA Component: QW.ClientConnectionControl

When you save the configuration version, the QW.ClientConnectionControl component is added to the JSON configuration. This is a private feature developed by Qwilt.

In this example, the QW.ClientConnectionControl SVTA component is configured to disable IPv6 connections.

{
  "generic-metadata-type": "MI.PrivateFeature.Qwilt.QW.ClientConnectionControl",
  "generic-metadata-value": {
    "enable-ipv6-connection": false
  }
}