feat: enable Flannel nftables mode#13376
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Pull request overview
This PR enables Flannel’s native nftables mode in the Talos-managed Flannel ConfigMap and documents the behavior change for release notes.
Changes:
- Adds
EnableNFTables: trueto generated Flannelnet-conf.json. - Updates Flannel ConfigMap golden test fixtures for IPv4, IPv6, and dual-stack.
- Adds a release note for the Flannel CNI behavior change.
Reviewed changes
Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.
Show a summary per file
| File | Description |
|---|---|
internal/app/machined/pkg/controllers/k8s/internal/k8stemplates/flannel.go |
Adds EnableNFTables to the generated Flannel network config. |
internal/app/machined/pkg/controllers/k8s/internal/k8stemplates/testdata/flannel-configmap-v4.yaml |
Updates IPv4 golden output. |
internal/app/machined/pkg/controllers/k8s/internal/k8stemplates/testdata/flannel-configmap-v6.yaml |
Updates IPv6 golden output. |
internal/app/machined/pkg/controllers/k8s/internal/k8stemplates/testdata/flannel-configmap-dual.yaml |
Updates dual-stack golden output. |
hack/release.toml |
Documents the Flannel nftables mode change. |
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frezbo
approved these changes
May 18, 2026
Use native nftables (it uses `nft` CLI internally) instead of going via `iptables-nft` shim. Signed-off-by: Andrey Smirnov <andrey.smirnov@siderolabs.com>
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Use native nftables (it uses
nftCLI internally) instead of going viaiptables-nftshim.