$OpenBSD: patch-evdns_c,v 1.1.1.1 2010/04/21 22:55:34 nicm Exp $
--- evdns.c.orig	Tue Apr 20 20:35:13 2010
+++ evdns.c	Tue Apr 20 20:36:31 2010
@@ -47,12 +47,14 @@
 #ifndef DNS_USE_GETTIMEOFDAY_FOR_ID
 #ifndef DNS_USE_OPENSSL_FOR_ID
 #ifndef DNS_USE_FTIME_FOR_ID
+#ifndef DNS_USE_ARC4RANDOM_FOR_ID
 #error Must configure at least one id generation method.
 #error Please see the documentation.
 #endif
 #endif
 #endif
 #endif
+#endif
 
 /* #define _POSIX_C_SOURCE 200507 */
 #define _GNU_SOURCE
@@ -1080,6 +1082,10 @@ default_transaction_id_fn(void)
 		*/
 		abort();
 	}
+#endif
+
+#ifdef DNS_USE_ARC4RANDOM_FOR_ID
+	trans_id = arc4random() & 0xffff;
 #endif
 	return trans_id;
 }