From 5aed79a7b90805bad745f348bd8045a554f6c20a Mon Sep 17 00:00:00 2001
From: Boemeltrein <130394941+Boemeltrein@users.noreply.github.com>
Date: Sat, 8 Mar 2025 11:57:02 +0100
Subject: [PATCH] docs(tailscale): sysctl note (#32995)
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**Description**
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⚒️ Fixes  # <!--(issue)-->

**⚙️ Type of change**

- [ ] ⚙️ Feature/App addition
- [ ] 🪛 Bugfix
- [ ] ⚠️ Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] 🔃 Refactor of current code
- [x] 📜 Documentation Changes

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**✔️ Checklist:**

- [ ] ⚖️ My code follows the style guidelines of this project
- [ ] 👀 I have performed a self-review of my own code
- [ ] #️⃣ I have commented my code, particularly in hard-to-understand
areas
- [x] 📄 I have made changes to the documentation
- [ ] 🧪 I have added tests to this description that prove my fix is
effective or that my feature works
- [ ] ⬆️ I increased versions for any altered app according to semantic
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- [x] I made sure the title starts with `feat(chart-name):`,
`fix(chart-name):`, `chore(chart-name):`, `docs(chart-name):` or
`fix(docs):`

**➕ App addition**

If this PR is an app addition please make sure you have done the
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---

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---
 charts/stable/tailscale/docs/How-To-Guide.md | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/charts/stable/tailscale/docs/How-To-Guide.md b/charts/stable/tailscale/docs/How-To-Guide.md
index 14c39c7f706..32ee5234359 100644
--- a/charts/stable/tailscale/docs/How-To-Guide.md
+++ b/charts/stable/tailscale/docs/How-To-Guide.md
@@ -12,15 +12,26 @@ This guide doesn't cover using Tailscale with individual applications. While the
 
 ## Requirements
 
+### Tailscale 
 - Tailscale Account (Free accounts available at [Tailscale's Official website](https://www.tailscale.com))
-- Tailscale Truecharts Chart
 - Tailscale DNS setup for Talos Cluster Domain
 
-
 Generate a Tailscale Auth Key for your setup, easy to generate on the page below
 
 ![tailscale-auth-key](./img/How-To-Image-1.png)
 
+### Sysctl
+:::note[sysctl]
+
+This part is not needed for CLustertool setup with TalosOS.
+
+:::
+At some OS's it is required to set two `sysctl` values for proper acces to your local network (LAN). Check your OS documentation how this needs to be done.
+```
+net.ipv4.ip_forward = 1
+net.ipv4.conf.all.src_valid_mark = 1 
+```
+
 ## Tailscale Chart Setup
 
 ### Application name