int system_del_route(struct device *dev, struct device_route *route);
int system_flush_routes(void);
int system_del_route(struct device *dev, struct device_route *route);
int system_flush_routes(void);
int system_del_ip_tunnel(const char *name);
int system_add_ip_tunnel(const char *name, struct blob_attr *attr);
int system_del_ip_tunnel(const char *name);
int system_add_ip_tunnel(const char *name, struct blob_attr *attr);