Add changelog entry for ACNS performance acceleration#5628
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sf-msft wants to merge 1 commit intoAzure:masterfrom
Open
Add changelog entry for ACNS performance acceleration#5628sf-msft wants to merge 1 commit intoAzure:masterfrom
sf-msft wants to merge 1 commit intoAzure:masterfrom
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Signed-off-by: Sam Foo <samfoo@microsoft.com>
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Pull request overview
Adds a missing entry to the project’s release notes to document the public preview of Advanced Container Networking Services (ACNS) performance acceleration for Azure CNI powered by Cilium.
Changes:
- Added a new bullet under Preview features describing ACNS performance acceleration mode (eBPF host routing / BpfVeth datapath).
| * Windows Server 2025 is now supported in preview. This new version includes the following updates: Containerd 2.0 is now default, Generation 2 VMs are enabled by default, and FIPS is enabled by default. For more information on upgrading your windows OS version, see [AKS documentation](https://aka.ms/aks/upgrade-windows-os-version). | ||
| * [Azure Linux with OS Guard](https://learn.microsoft.com/azure/azure-linux/intro-azure-linux-os-guard), a hardened and immutable variant of Azure Linux, is now in public preview. | ||
| * [Istio CNI](https://learn.microsoft.com/azure/aks/istio-cni) is now in public preview. Istio CNI improves security by eliminating the need for `NET_ADMIN` and `NET_RAW` capabilities in application workloads within the service mesh. | ||
| * Advanced Container Networking Services (ACNS) [performance acceleration mode](https://aka.ms/acnsperformance) is now in Public Preview. Choose the BpfVeth datapath acceleration mode for Azure CNI Powered by Cilium to improve pod networking performance and reduce node CPU usage. |
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The changelog uses lowercase "public preview" elsewhere in this section (for example, lines 113–114). To keep terminology consistent, consider changing "Public Preview" to "public preview" here, and also formatting the datapath mode name as code (for example, BpfVeth) like other technical tokens in this file.
Suggested change
| * Advanced Container Networking Services (ACNS) [performance acceleration mode](https://aka.ms/acnsperformance) is now in Public Preview. Choose the BpfVeth datapath acceleration mode for Azure CNI Powered by Cilium to improve pod networking performance and reduce node CPU usage. | |
| * Advanced Container Networking Services (ACNS) [performance acceleration mode](https://aka.ms/acnsperformance) is now in public preview. Choose the `BpfVeth` datapath acceleration mode for Azure CNI Powered by Cilium to improve pod networking performance and reduce node CPU usage. |
bmoore-msft
reviewed
Feb 26, 2026
| * Windows Server 2025 is now supported in preview. This new version includes the following updates: Containerd 2.0 is now default, Generation 2 VMs are enabled by default, and FIPS is enabled by default. For more information on upgrading your windows OS version, see [AKS documentation](https://aka.ms/aks/upgrade-windows-os-version). | ||
| * [Azure Linux with OS Guard](https://learn.microsoft.com/azure/azure-linux/intro-azure-linux-os-guard), a hardened and immutable variant of Azure Linux, is now in public preview. | ||
| * [Istio CNI](https://learn.microsoft.com/azure/aks/istio-cni) is now in public preview. Istio CNI improves security by eliminating the need for `NET_ADMIN` and `NET_RAW` capabilities in application workloads within the service mesh. | ||
| * Advanced Container Networking Services (ACNS) [performance acceleration mode](https://aka.ms/acnsperformance) is now in Public Preview. Choose the BpfVeth datapath acceleration mode for Azure CNI Powered by Cilium to improve pod networking performance and reduce node CPU usage. |
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Is this doc'd anywhere, the link we do have does not mention the new datapath?
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https://learn.microsoft.com/en-us/azure/aks/how-to-enable-ebpf-host-routing#enable-advanced-container-networking-services-and-ebpf-host-routing lists the datapath option explicitly if that is a better option.
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Add missing changelog entry for ACNS performance (eBPF Host Routing)