Dual-stack Kubernetes with Direct server Return
summary
Extends open source kube-router extended for dual-stack DSR to serve both IPv4 and IPv6 from a single Deployment by advertising Service externalIPs to the physical router (requires BGP and ECMP). Uses iptables mangle + ipvsadm+IPIP tunnel to mark incoming packets, map firewall-mark→pod backends and encapsulate for node→pod delivery so the pod sees the original client IP. Demo shows a single web pod with dual-stack addresses, tunnels created and external IPs reachable from outside, so the DSR flow works end-to-end.
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chapters (6)
- 0:00Introduction and agenda
- 1:04Understanding DSR
- 5:34Business use cases
- 8:50Dual-stack architecture
- 13:40Technical implementation
- 19:36Demo and conclusion
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