1 files changed, 10 insertions, 2 deletions
diff --git a/configs/releng/airootfs/etc/systemd/network/20-ethernet.network b/configs/releng/airootfs/etc/systemd/network/20-ethernet.network
index 37878b0..f2a7d60 100644
--- a/configs/releng/airootfs/etc/systemd/network/20-ethernet.network
+++ b/configs/releng/airootfs/etc/systemd/network/20-ethernet.network
@@ -6,5 +6,13 @@ Name=eth*
 DHCP=yes
 IPv6PrivacyExtensions=yes
 
-[DHCP]
-RouteMetric=512
+# 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