A virtual network or subnet that has an IPv6 range alongside its IPv4 one. IPv6 subnets are always /64, drawn from the VNet's IPv6 space and added to a subnet that already exists.
Read more: Microsoft Learn
In the Ultra Transcenders books
Each book explains Dual-stack in context, with comparison tables and the common traps.
Terms in this definition
- VNet
A private network belonging to a single subscription and region and covering all of that region's availability zones. A VM can only use a VNet located in the same region.
- Subnet
A segment of a VNet's address space from which resources receive private IPs. Azure holds back five addresses per subnet (the first four and the last), leaving 251 usable in a /24 and three in a /29, the smallest IPv4 subnet.
- IPv6
Addressing based on 128 bits, available in Standard public IPs and dual-stack VNets. Public IPs for Azure Firewall and Bastion have to be IPv4.
- RANGE
Usable only in visual calculations, this DAX function picks a span of rows along an axis counted from the current one, say the previous six. Think of it as a simpler WINDOW, handy for moving totals.
- IPv4
The 32-bit version of IP addressing. It remains the address format you will see most often in log data and threat indicators.
Related terms
- IPv6
The 128-bit version of IP addressing. Discovering nodes automatically relies on its multicast passing through the physical switch, and dual-stack clusters need Prism Central to be dual-stack too.