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With IPv4 address space exhausted and providers beginning to charge for public IPv4 usage, organizations face rising costs and complex migration challenges, prompting a strategic shift toward IPv6 adoption, alternative solutions, or passing expenses to customers, while grappling with ISP support gaps and tooling limitations.
With global IPv4 address pools exhausted, major cloud providers like AWS and Fly.io are introducing hourly fees for public IPv4 usage, prompting a costly shift toward IPv6, yet many organizations face significant technical, ISP, and tooling challenges that make the migration complex and costly.
This article explains why Alibaba Cloud fully supports IPv6, outlines the IPv6-enabled products such as DNS, CDN, SLB, VPC, ECS, and conversion services, and presents typical migration scenarios to help users transition from IPv4 to IPv6 efficiently.
Youku’s pioneering IPv6 migration, launched in early 2018 and completed by Double 11, progressed through external, dual‑stack internal, and IPv6‑only phases, tackled test‑environment, MTU, and library issues, employed sophisticated gray‑release and monitoring, and ultimately unlocked unlimited address space, enhanced security, and faster, scalable video delivery.
The article explains the exhaustion of IPv4, presents worldwide IPv6 adoption statistics and leading countries, discusses technical differences and planning factors such as network, business, user, and cost considerations, and outlines principles for a smooth, incremental migration to IPv6.
After a mis‑configured security group in a classic network exposed a neighboring Alibaba Cloud user, developers highlighted the risks of shared internal networks and advocated moving to isolated Virtual Private Clouds, which offer customizable subnets, fine‑grained security, hybrid connectivity, and are now favored across major public‑cloud providers.