IPV4LL_ROUTE_METRIC   68 src/network/networkd-ipv4ll.c         route->metrics = IPV4LL_ROUTE_METRIC;
IPV4LL_ROUTE_METRIC  163 src/network/networkd-ipv4ll.c         route->metrics = IPV4LL_ROUTE_METRIC;
IPV4LL_ROUTE_METRIC  255 src/network/networkd-network.c                 route->metrics = IPV4LL_ROUTE_METRIC;