From c931e04f7ecf18645d114144e5663e633cfd1a78 Mon Sep 17 00:00:00 2001
From: xengineering <me@xengineering.eu>
Date: Sun, 10 Aug 2025 15:58:49 +0200
Subject: fw: sim: srv: Add this folder

This folder contains material to set up a network environment for the
native sim firmware.
---
 fw/sim/srv/README.md    | 17 +++++++++++++++++
 fw/sim/srv/zeth.netdev  |  7 +++++++
 fw/sim/srv/zeth.network | 13 +++++++++++++
 3 files changed, 37 insertions(+)
 create mode 100644 fw/sim/srv/README.md
 create mode 100644 fw/sim/srv/zeth.netdev
 create mode 100644 fw/sim/srv/zeth.network

diff --git a/fw/sim/srv/README.md b/fw/sim/srv/README.md
new file mode 100644
index 0000000..455800f
--- /dev/null
+++ b/fw/sim/srv/README.md
@@ -0,0 +1,17 @@
+# Network setup for native sim firmware
+
+This folder contains documentation to provide a network setup suitable to run
+the native sim build of the firmware.
+
+It assumes a Linux host, an executable file with the native sim firmware,
+`systemd-networkd` as network configuration solution and `ufw` as firewall.
+
+For network configuration the `zeth.netdev` and `zeth.network` files from this
+folder have to be used with `systemd-networkd`.
+
+The following is required to open the firewall for the firmware on the `zeth`
+virtual network interface created by `systemd-networkd`:
+
+```
+ufw allow in on zeth to any port 1883 proto tcp
+```
diff --git a/fw/sim/srv/zeth.netdev b/fw/sim/srv/zeth.netdev
new file mode 100644
index 0000000..e8de39d
--- /dev/null
+++ b/fw/sim/srv/zeth.netdev
@@ -0,0 +1,7 @@
+# This Source Code Form is subject to the terms of the Mozilla Public License,
+# v. 2.0. If a copy of the MPL was not distributed with this file, You can
+# obtain one at https://mozilla.org/MPL/2.0/.
+
+[NetDev]
+Name=zeth
+Kind=tap
diff --git a/fw/sim/srv/zeth.network b/fw/sim/srv/zeth.network
new file mode 100644
index 0000000..7bf386a
--- /dev/null
+++ b/fw/sim/srv/zeth.network
@@ -0,0 +1,13 @@
+# This Source Code Form is subject to the terms of the Mozilla Public License,
+# v. 2.0. If a copy of the MPL was not distributed with this file, You can
+# obtain one at https://mozilla.org/MPL/2.0/.
+
+[Match]
+Name=zeth
+
+[Network]
+IPv6SendRA=yes
+Address=2001:db8::36/64
+
+[IPv6Prefix]
+Prefix=2001:db8::/64
-- 
cgit v1.2.3-70-g09d2