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IPv6 networking¶
IPv6 networking support enables you to run ScyllaDB clusters on IPv6 networks, with options for IPv6-only, IPv4-only, or dual-stack (both protocols) configurations.
Note
IPv6-only configurations are experimental. All other configurations are production-ready. See Production readiness for details.
Tutorials¶
Start here if you’re new to IPv6 networking in ScyllaDB:
Getting started with IPv6 networking - Your first IPv6-enabled cluster with step-by-step guidance
How-to guides¶
Practical guides for specific tasks:
Configure dual-stack networking - IPv4-first (recommended) and IPv6-first dual-stack
Configure IPv6-only - IPv6 single-stack (experimental)
Migrate clusters to IPv6 - Migrate existing clusters from IPv4 to IPv6
Troubleshoot IPv6 networking issues - Diagnose and resolve common problems
Reference¶
Technical specifications and API details:
IPv6 configuration reference - Complete API reference for IPv6 settings
Concepts¶
Deep explanations of how IPv6 networking works:
IPv6 networking concepts - Understand how IPv6 support works in ScyllaDB
Configuration examples¶
Quick examples for common scenarios:
Dual-stack (recommended for production):
network:
ipFamilyPolicy: PreferDualStack
ipFamilies:
- IPv4 # ScyllaDB uses IPv4
- IPv6 # Services also support IPv6
dnsPolicy: ClusterFirst
IPv6-only (experimental):
network:
ipFamilyPolicy: SingleStack
ipFamilies:
- IPv6
dnsPolicy: ClusterFirst
IPv4-only (default):
network:
ipFamilyPolicy: SingleStack
ipFamilies:
- IPv4
For complete examples, see the how-to guides.
Key concepts¶
IP family selection¶
The first IP family in network.ipFamilies determines which protocol ScyllaDB uses internally:
[IPv6]→ ScyllaDB uses IPv6[IPv4, IPv6]→ ScyllaDB uses IPv4, services support both[IPv6, IPv4]→ ScyllaDB uses IPv6, services support both
Learn more in IPv6 networking concepts.
Dual-stack behavior¶
“Dual-stack” refers to Kubernetes services having both IPv4 and IPv6 addresses. ScyllaDB itself always runs on a single IP family (the first one configured).
This provides client flexibility while maintaining internal consistency.
DNS configuration¶
For IPv6, dnsPolicy: ClusterFirst is essential to ensure proper DNS resolution of IPv6 addresses.
Prerequisites¶
Before configuring IPv6:
Network: Cluster must have IPv6 networking configured
Feature status¶
Configuration |
Status |
Production Ready |
|---|---|---|
Dual-stack (IPv4 + IPv6) |
Stable |
Yes |
IPv6-only |
Experimental |
No |
IPv4-only |
Stable |
Yes |
For IPv6-only production support progress, see #3211.
Getting help¶
If you need assistance:
Check documentation: Review the troubleshooting guide and concepts
Search issues: Look for similar problems in GitHub issues
Ask the community: Join ScyllaDB Slack
Open an issue: Report bugs or request features on GitHub