From 17b5f822bf15822c18902a88249a67af1a9702f6 Mon Sep 17 00:00:00 2001
From: Aroy-Art <Aroy-Art@pm.me>
Date: Sun, 29 Sep 2024 22:13:58 +0200
Subject: [PATCH] Add: systemd network config

---
 .../ipv6-privacy-extensions.conf              |  2 ++
 .../etc/systemd/network/20-ethernet.network   | 24 +++++++++++++++++++
 .../etc/systemd/network/20-wlan.network       | 20 ++++++++++++++++
 .../etc/systemd/network/20-wwan.network       | 19 +++++++++++++++
 .../etc/systemd/resolved.conf.d/archiso.conf  |  4 ++++
 5 files changed, 69 insertions(+)
 create mode 100644 archlive/airootfs/etc/systemd/network.conf.d/ipv6-privacy-extensions.conf
 create mode 100644 archlive/airootfs/etc/systemd/network/20-ethernet.network
 create mode 100644 archlive/airootfs/etc/systemd/network/20-wlan.network
 create mode 100644 archlive/airootfs/etc/systemd/network/20-wwan.network
 create mode 100644 archlive/airootfs/etc/systemd/resolved.conf.d/archiso.conf

diff --git a/archlive/airootfs/etc/systemd/network.conf.d/ipv6-privacy-extensions.conf b/archlive/airootfs/etc/systemd/network.conf.d/ipv6-privacy-extensions.conf
new file mode 100644
index 0000000..0e9ceb4
--- /dev/null
+++ b/archlive/airootfs/etc/systemd/network.conf.d/ipv6-privacy-extensions.conf
@@ -0,0 +1,2 @@
+[Network]
+IPv6PrivacyExtensions=yes
diff --git a/archlive/airootfs/etc/systemd/network/20-ethernet.network b/archlive/airootfs/etc/systemd/network/20-ethernet.network
new file mode 100644
index 0000000..d3a3271
--- /dev/null
+++ b/archlive/airootfs/etc/systemd/network/20-ethernet.network
@@ -0,0 +1,24 @@
+[Match]
+# Matching with "Type=ether" causes issues with containers because it also matches virtual Ethernet interfaces (veth*).
+# See https://bugs.archlinux.org/task/70892
+# Instead match by globbing the network interface name.
+Name=en*
+Name=eth*
+
+[Link]
+RequiredForOnline=routable
+
+[Network]
+DHCP=yes
+MulticastDNS=yes
+
+# systemd-networkd does not set per-interface-type default route metrics
+# https://github.com/systemd/systemd/issues/17698
+# Explicitly set route metric, so that Ethernet is preferred over Wi-Fi and Wi-Fi is preferred over mobile broadband.
+# Use values from NetworkManager. From nm_device_get_route_metric_default in
+# https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/blob/main/src/core/devices/nm-device.c
+[DHCPv4]
+RouteMetric=100
+
+[IPv6AcceptRA]
+RouteMetric=100
diff --git a/archlive/airootfs/etc/systemd/network/20-wlan.network b/archlive/airootfs/etc/systemd/network/20-wlan.network
new file mode 100644
index 0000000..8b70a95
--- /dev/null
+++ b/archlive/airootfs/etc/systemd/network/20-wlan.network
@@ -0,0 +1,20 @@
+[Match]
+Name=wl*
+
+[Link]
+RequiredForOnline=routable
+
+[Network]
+DHCP=yes
+MulticastDNS=yes
+
+# systemd-networkd does not set per-interface-type default route metrics
+# https://github.com/systemd/systemd/issues/17698
+# Explicitly set route metric, so that Ethernet is preferred over Wi-Fi and Wi-Fi is preferred over mobile broadband.
+# Use values from NetworkManager. From nm_device_get_route_metric_default in
+# https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/blob/main/src/core/devices/nm-device.c
+[DHCPv4]
+RouteMetric=600
+
+[IPv6AcceptRA]
+RouteMetric=600
diff --git a/archlive/airootfs/etc/systemd/network/20-wwan.network b/archlive/airootfs/etc/systemd/network/20-wwan.network
new file mode 100644
index 0000000..6e1c8dd
--- /dev/null
+++ b/archlive/airootfs/etc/systemd/network/20-wwan.network
@@ -0,0 +1,19 @@
+[Match]
+Name=ww*
+
+[Link]
+RequiredForOnline=routable
+
+[Network]
+DHCP=yes
+
+# systemd-networkd does not set per-interface-type default route metrics
+# https://github.com/systemd/systemd/issues/17698
+# Explicitly set route metric, so that Ethernet is preferred over Wi-Fi and Wi-Fi is preferred over mobile broadband.
+# Use values from NetworkManager. From nm_device_get_route_metric_default in
+# https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/blob/main/src/core/devices/nm-device.c
+[DHCPv4]
+RouteMetric=700
+
+[IPv6AcceptRA]
+RouteMetric=700
diff --git a/archlive/airootfs/etc/systemd/resolved.conf.d/archiso.conf b/archlive/airootfs/etc/systemd/resolved.conf.d/archiso.conf
new file mode 100644
index 0000000..636f3bd
--- /dev/null
+++ b/archlive/airootfs/etc/systemd/resolved.conf.d/archiso.conf
@@ -0,0 +1,4 @@
+# Default systemd-resolved configuration for archiso
+
+[Resolve]
+MulticastDNS=yes