> For the complete documentation index, see [llms.txt](https://docs.ionos.com/cloud/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ionos.com/cloud/network-services/vdc-networking/ip-address/ipv6/how-tos/update-ipv6.md).

# Update IPv6

To update IPv6 configurations for LANs in the Data Center Designer (DCD), follow these steps:

1\. In the **DCD**, go to **Menu** > **Virtual Data Centers**.

2\. Select the VDC and the LAN for which you want to update the IPv6 address, and select the **Members** tab.

3\. You can update your **IPv6 CIDR block** with **prefix length /64** from the VDCs allocated range.

4\. Start provisioning by clicking **PROVISION CHANGES** in the Inspector pane.

![Update an existing IPv6 configuration](/files/FS2BT5w9kwBRZTpBJxMQ)

The Virtual Data Center (VDC) will now be provisioned with the new network settings. In this case, the existing configuration gets reprovisioned accordingly.

{% hint style="info" %}
**Note:** IPv6 traffic and IPv6-enabled LANs are now supported for the [<mark style="color:blue;">Flow Logs</mark>](/cloud/network-services/flow-logs.md) feature.
{% endhint %}


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