eBPF Host Routing in Advanced
Container Networking Services for Azure Kubernetes Service (AKS) is now
generally available.
eBPF Host Routing improves
Kubernetes networking performance by moving packet forwarding and routing
decisions directly into the Linux kernel using eBPF. This removes the overhead
of iptables-based processing and reduces dependence on the host networking
stack, resulting in lower latency, fewer network hops, and higher throughput
for application traffic. For large-scale AKS deployments, eBPF Host Routing
helps deliver more efficient network performance, improved scalability, and a
better experience for latency-sensitive and high-traffic workloads.
This release also
introduces an enhanced enablement experience that respects existing network
connections during rollout. When eBPF Host Routing is enabled on an existing
cluster, AKS performs a controlled node rotation to transition nodes to the new
networking mode, helping maintain connection continuity and minimize disruption
to running applications.