1 files changed, 17 insertions, 0 deletions
diff --git a/configs/releng/airootfs/etc/systemd/network/20-wwan.network b/configs/releng/airootfs/etc/systemd/network/20-wwan.network
new file mode 100644
index 0000000..9104c24
--- /dev/null
+++ b/configs/releng/airootfs/etc/systemd/network/20-wwan.network
@@ -0,0 +1,17 @@
+[Match]
+Name=ww*
+
+[Network]
+DHCP=yes
+IPv6PrivacyExtensions=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