void interface_ip_set_enabled(struct interface_ip_settings *ip, bool enabled);
void interface_ip_update_metric(struct interface_ip_settings *ip, int metric);
-struct interface *interface_ip_add_target_route(union if_addr *addr, bool v6);
+struct interface *interface_ip_add_target_route(union if_addr *addr, bool v6, struct interface *iface);
struct device_prefix* interface_ip_add_device_prefix(struct interface *iface,
struct in6_addr *addr, uint8_t length, time_t valid_until, time_t preferred_until,