int sd_rtnl_message_close_container(sd_rtnl_message *m);
int sd_rtnl_message_read(sd_rtnl_message *m, unsigned short *type, void **data);
int sd_rtnl_message_close_container(sd_rtnl_message *m);
int sd_rtnl_message_read(sd_rtnl_message *m, unsigned short *type, void **data);