CIDR
Glossary Page
CIDR stands for Classless Inter-Domain Routing, which is a way of describing blocks of IP addresses in networking. In Kubernetes, each Node is assigned a range of IP addresses through CIDR notation, which consists of a start address and a subnet mask. This enables Nodes to assign each Pod a unique IP address. While CIDR was originally used for IPv4, it has also been expanded to include IPv6.
https://kubernetes.io/docs/reference/glossary/?all=true
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