rancher-docs/content/k3s/latest/en/known-issues/_index.md

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Known Issues	70

The Known Issues are updated periodically and designed to inform you about any issues that may not be immediately addressed in the next upcoming release.

Snap Docker

If you plan to use K3s with docker, Docker installed via a snap package is not recommended as it has been known to cause issues running K3s.

Iptables

If you are running iptables in nftables mode instead of legacy you might encounter issues. We recommend utilizing newer iptables (such as 1.6.1+) to avoid issues.

Rootless Mode

Running K3s with Rootless mode is experimental and has several known issues.