int sd_rtnl_message_link_get_flags(sd_rtnl_message *m, unsigned *flags);
int sd_rtnl_message_route_set_dst_prefixlen(sd_rtnl_message *m, unsigned char prefixlen);
+int sd_rtnl_message_route_set_scope(sd_rtnl_message *m, unsigned char scope);
int sd_rtnl_message_append_string(sd_rtnl_message *m, unsigned short type, const char *data);
int sd_rtnl_message_append_u8(sd_rtnl_message *m, unsigned short type, uint8_t data);