[Match] Name=en* Name=eth* [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=100 [IPv6AcceptRA] RouteMetric=100