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docs: document minimum Linux kernel version (4.20+) #1459

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5 changes: 5 additions & 0 deletions README.md
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Expand Up @@ -22,6 +22,11 @@ Netavark is a tool for configuring networking for Linux containers. Its features
- [Podman](https://podman.io/docs) 4.0+
- [protoc](https://grpc.io/docs/protoc-installation/)

At runtime, Netavark supports Linux kernel 4.20 or newer. Netavark relies on

@Luap99 Luap99 Jun 8, 2026

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I think this says the wrong thing? Did you actually test it works on kernel 4.20 (i.e. passing all tests)?

I think what we can say it it does not work on older kernels so we need at least 4.20 but we have no way of testing older kernels so it is totally possible we require other newer kernels already.

`NETLINK_GET_STRICT_CHK` strict netlink checking, which is unavailable on older
kernels. Running on older kernels can result in a netlink `Protocol not
available` (EPROTONOSUPPORT) error.

## MSRV (Minimum Supported Rust Version)

v1.88
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