int sd_rtnl_message_addr_set_scope(sd_rtnl_message *m, unsigned char scope);
int sd_rtnl_message_addr_set_flags(sd_rtnl_message *m, unsigned char flags);
int sd_rtnl_message_addr_get_family(sd_rtnl_message *m, unsigned char *family);
int sd_rtnl_message_addr_set_scope(sd_rtnl_message *m, unsigned char scope);
int sd_rtnl_message_addr_set_flags(sd_rtnl_message *m, unsigned char flags);
int sd_rtnl_message_addr_get_family(sd_rtnl_message *m, unsigned char *family);