Amazon Neptune Enables Dual-Stack Networking with IPv6 Support

Amazon Neptune introduced dual-stack mode allowing simultaneous IPv4 and IPv6 connectivity for graph database clusters.

By Victor Hale · Editorial pseudonym · 2026-06-30 · 1 min read

AI-ASSISTED REPORTING · RETROSPECTIVE ARCHIVE

Retrospective edition: 2026-06-30. Source published: 2026-06-30. Added to this archive: 2026-11-03. This briefing was prepared later from the linked announcement; it was not published on this website on the historical edition date.

Neptune database clusters can now operate in dual-stack mode, accepting client connections over IPv4 and IPv6 protocols at the same time. This facilitates migration to IPv6 while maintaining compatibility with legacy IPv4 applications.

Two deployment styles are supported: private dual-stack for isolated internal use, and public dual-stack for internet-facing applications. The feature is available in all AWS regions where Neptune is deployed and requires no application changes to utilize the preferred protocol.

Source & further reading

Amazon Neptune announces dual stack support with IPv6 ↗

Source published 2026-06-30. This report was prepared with AI assistance from the linked primary-source material. Claims and limitations should be checked against the original announcement or research.