int dns_question_cname_redirect(DnsQuestion *q, const char *name, DnsQuestion **ret);
+int dns_question_endswith(DnsQuestion *q, const char *suffix);
+int dns_question_extract_reverse_address(DnsQuestion *q, int *family, union in_addr_union *address);
+
DEFINE_TRIVIAL_CLEANUP_FUNC(DnsQuestion*, dns_question_unref);