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..cc946fe
--- /dev/null
+++ b/configs/releng/airootfs/etc/systemd/network/20-wwan.network
@@ -0,0 +1,15 @@
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+[Match]
+Type=wwan
+
+[Network]
+DHCP=yes
+IPv6PrivacyExtensions=yes
+
+[DHCPv4]
+RouteMetric=2048
+
+[DHCPv6]
+RouteMetric=2048