IPv6 support in Amazon Keyspaces
IPv6 support in Amazon Keyspaces allows applications to establish connections using Internet Protocol version 6, the next-generation internet protocol that provides a vastly expanded address space compared to IPv4. The implementation uses dual-stack endpoints that support both IPv4 and IPv6 simultaneously, ensuring backward compatibility while enabling future-ready connectivity. For a list of endpoints, see Global endpoints.
Amazon Keyspaces implements IPv6 support through a dual-stack architecture that maintains complete backward compatibility while enabling IPv6 connectivity.
DNS resolution in Amazon Keyspaces
When applications connect to dual-stack endpoints, the DNS resolution process returns both address types:
- A Records (IPv4)
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Traditional IPv4 addresses for backward compatibility
- AAAA Records (IPv6)
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New IPv6 addresses for modern connectivity
The client's operating system and network stack automatically select the most appropriate protocol based on local configuration, network availability, and system preferences.
The Cassandra Query Language (CQL) protocol seamlessly supports IPv6 connectivity without requiring application code changes.
- Automatic protocol selection
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Applications specify the dual-stack endpoint
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Network stack chooses IPv4 or IPv6 based on availability
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No code modifications required for existing CQL applications
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- Driver compatibility
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All major CQL drivers support IPv6 transparently
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DataStax drivers handle IPv6 addresses natively
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Open-source drivers work without modification
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- Connection consistency
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System tables reflect the connection protocol used
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IPv6 connections show IPv6 addresses in
system.peers -
IPv4 connections continue showing IPv4 addresses
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