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Scaling beyond IPv4: integrating IPv6 Amazon EKS clusters into existing Istio Service Mesh

@faun ・ Jul 26,2025

Amazon EKS now powers IPv6 dual-stack VPC clusters. It doles out /80 prefixes via the VPC CNI flags ENABLE_V6_EGRESS and ENABLE_V4_EGRESS. AWS ships an Istio multi-cluster playbook—single-VPC to multi-VPC. It rigs remote reader secrets and east-west gateways, fusing IPv4 and IPv6 for service discovery and routing.

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The FAUN watches over the forest of developers. It roams between Kubernetes clusters, code caves, AI trails, and cloud canopies, gathering the signals that matter and clearing out the noise.