> 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/vdc.md).

# Virtual Data Center LANs

IONOS CLOUD VDC Networking: configure IPv6 addressing for virtual data center LANs

A Virtual Data Center (VDC) is a collection of cloud resources for creating an enterprise-grade IT infrastructure. A Local Area Network (LAN) in a VDC refers to the interconnected network of Virtual Machines (VMs) within a single physical server or cluster of servers. The LAN in a VDC is a critical component of cloud computing infrastructure that enables efficient and secure communication between VMs and other resources within the data center.

VDC operates in a dual-stack mode that is, the Network Interface Cards (NICs) can communicate over IPv4, IPv6, or both. In Data Center Designer (DCD), IPv6 can be enabled for both Private and Public LANs, but on provisioning, only **Public IPv6 addresses** are allocated to all LANs.


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