diff -up bind-9.9.4/bin/dig/dighost.c.send_buffers bind-9.9.4/bin/dig/dighost.c

--- bind-9.9.4/bin/dig/dighost.c.send_buffers	2013-10-31 14:22:20.296811613 +0100

+++ bind-9.9.4/bin/dig/dighost.c	2013-10-31 14:57:00.336400190 +0100

@@ -194,6 +194,7 @@ isc_boolean_t validated = ISC_TRUE;

 isc_entropy_t *entp = NULL;

 isc_mempool_t *commctx = NULL;

 isc_boolean_t debugging = ISC_FALSE;

+isc_boolean_t debugtiming = ISC_FALSE;

 isc_boolean_t memdebugging = ISC_FALSE;

 char *progname = NULL;

 isc_mutex_t lookup_lock;

@@ -553,6 +554,12 @@ debug(const char *format, ...) {

 	if (debugging) {

 		fflush(stdout);

+		if (debugtiming) {

+			struct timeval tv;

+			(void)gettimeofday(&tv, NULL);

+			fprintf(stderr, "%ld.%06ld: ", (long)tv.tv_sec,

+				(long)tv.tv_usec);

+		}

 		va_start(args, format);

 		vfprintf(stderr, format, args);

 		va_end(args);

@@ -2416,8 +2423,10 @@ send_done(isc_task_t *_task, isc_event_t

 	for  (b = ISC_LIST_HEAD(sevent->bufferlist);

 	      b != NULL;

-	      b = ISC_LIST_HEAD(sevent->bufferlist))

+	      b = ISC_LIST_HEAD(sevent->bufferlist)) {

 		ISC_LIST_DEQUEUE(sevent->bufferlist, b, link);

+		isc_mem_free(mctx, b);

+	}

 	query = event->ev_arg;

 	query->waiting_senddone = ISC_FALSE;

@@ -2609,6 +2618,17 @@ send_tcp_connect(dig_query_t *query) {

 	}

 }

+static isc_buffer_t *

+clone_buffer(isc_buffer_t *source) {

+	isc_buffer_t *buffer;

+	buffer = isc_mem_allocate(mctx, sizeof(*buffer));

+	if (buffer == NULL)

+		fatal("memory allocation failure in %s:%d",

+		      __FILE__, __LINE__);

+	*buffer = *source;

+	return (buffer);

+}

+

 /*%

  * Send a UDP packet to the remote nameserver, possible starting the

  * recv action as well.  Also make sure that the timer is running and

@@ -2618,6 +2638,7 @@ static void

 send_udp(dig_query_t *query) {

 	dig_lookup_t *l = NULL;

 	isc_result_t result;

+	isc_buffer_t *sendbuf;

 	debug("send_udp(%p)", query);

@@ -2664,14 +2685,16 @@ send_udp(dig_query_t *query) {

 		debug("recvcount=%d", recvcount);

 	}

 	ISC_LIST_INIT(query->sendlist);

-	ISC_LIST_ENQUEUE(query->sendlist, &query->sendbuf, link);

+	sendbuf = clone_buffer(&query->sendbuf);

+	ISC_LIST_ENQUEUE(query->sendlist, sendbuf, link);

 	debug("sending a request");

 	TIME_NOW(&query->time_sent);

 	INSIST(query->sock != NULL);

 	query->waiting_senddone = ISC_TRUE;

-	result = isc_socket_sendtov(query->sock, &query->sendlist,

-				    global_task, send_done, query,

-				    &query->sockaddr, NULL);

+	result = isc_socket_sendtov2(query->sock, &query->sendlist,

+				     global_task, send_done, query,

+				     &query->sockaddr, NULL,

+				     ISC_SOCKFLAG_NORETRY);

 	check_result(result, "isc_socket_sendtov");

 	sendcount++;

 }

@@ -2838,6 +2861,7 @@ static void

 launch_next_query(dig_query_t *query, isc_boolean_t include_question) {

 	isc_result_t result;

 	dig_lookup_t *l;

+	isc_buffer_t *buffer;

 	INSIST(!free_now);

@@ -2861,9 +2885,15 @@ launch_next_query(dig_query_t *query, is

 	isc_buffer_putuint16(&query->slbuf, (isc_uint16_t) query->sendbuf.used);

 	ISC_LIST_INIT(query->sendlist);

 	ISC_LINK_INIT(&query->slbuf, link);

-	ISC_LIST_ENQUEUE(query->sendlist, &query->slbuf, link);

-	if (include_question)

-		ISC_LIST_ENQUEUE(query->sendlist, &query->sendbuf, link);

+	if (!query->first_soa_rcvd) {

+		buffer = clone_buffer(&query->slbuf);

+		ISC_LIST_ENQUEUE(query->sendlist, buffer, link);

+		if (include_question) {

+			buffer = clone_buffer(&query->sendbuf);

+			ISC_LIST_ENQUEUE(query->sendlist, buffer, link);

+		}

+	}

+

 	ISC_LINK_INIT(&query->lengthbuf, link);

 	ISC_LIST_ENQUEUE(query->lengthlist, &query->lengthbuf, link);

diff -up bind-9.9.4/bin/dig/host.c.send_buffers bind-9.9.4/bin/dig/host.c

--- bind-9.9.4/bin/dig/host.c.send_buffers	2013-10-31 14:22:20.270811568 +0100

+++ bind-9.9.4/bin/dig/host.c	2013-10-31 14:22:20.328811669 +0100

@@ -638,6 +638,8 @@ pre_parse_args(int argc, char **argv) {

 		case 'w': break;

 		case 'C': break;

 		case 'D':

+			if (debugging)

+				debugtiming = ISC_TRUE;

 			debugging = ISC_TRUE;

 			break;

 		case 'N': break;

diff -up bind-9.9.4/bin/dig/include/dig/dig.h.send_buffers bind-9.9.4/bin/dig/include/dig/dig.h

--- bind-9.9.4/bin/dig/include/dig/dig.h.send_buffers	2013-10-31 14:22:20.270811568 +0100

+++ bind-9.9.4/bin/dig/include/dig/dig.h	2013-10-31 14:22:20.328811669 +0100

@@ -275,7 +275,7 @@ extern isc_boolean_t validated;

 extern isc_taskmgr_t *taskmgr;

 extern isc_task_t *global_task;

 extern isc_boolean_t free_now;

-extern isc_boolean_t debugging, memdebugging;

+extern isc_boolean_t debugging, debugtiming, memdebugging;

 extern char *progname;

 extern int tries;

diff -up bind-9.9.4/lib/isc/include/isc/namespace.h.send_buffers bind-9.9.4/lib/isc/include/isc/namespace.h

--- bind-9.9.4/lib/isc/include/isc/namespace.h.send_buffers	2013-09-05 07:09:08.000000000 +0200

+++ bind-9.9.4/lib/isc/include/isc/namespace.h	2013-10-31 14:22:20.328811669 +0100

@@ -106,6 +106,7 @@

 #define isc_socket_sendv isc__socket_sendv

 #define isc_socket_sendtov isc__socket_sendtov

 #define isc_socket_sendto2 isc__socket_sendto2

+#define isc_socket_sendtov2 isc__socket_sendtov2

 #define isc_socket_cleanunix isc__socket_cleanunix

 #define isc_socket_permunix isc__socket_permunix

 #define isc_socket_bind isc__socket_bind

diff -up bind-9.9.4/lib/isc/include/isc/socket.h.send_buffers bind-9.9.4/lib/isc/include/isc/socket.h

--- bind-9.9.4/lib/isc/include/isc/socket.h.send_buffers	2013-09-05 07:09:08.000000000 +0200

+++ bind-9.9.4/lib/isc/include/isc/socket.h	2013-10-31 14:22:20.328811669 +0100

@@ -866,6 +866,11 @@ isc_socket_sendtov(isc_socket_t *sock, i

 		   isc_task_t *task, isc_taskaction_t action, const void *arg,

 		   isc_sockaddr_t *address, struct in6_pktinfo *pktinfo);

 isc_result_t

+isc_socket_sendtov2(isc_socket_t *sock, isc_bufferlist_t *buflist,

+		    isc_task_t *task, isc_taskaction_t action, const void *arg,

+		    isc_sockaddr_t *address, struct in6_pktinfo *pktinfo,

+		    unsigned int flags);

+isc_result_t

 isc_socket_sendto2(isc_socket_t *sock, isc_region_t *region,

 		   isc_task_t *task,

 		   isc_sockaddr_t *address, struct in6_pktinfo *pktinfo,

diff -up bind-9.9.4/lib/isc/unix/socket.c.send_buffers bind-9.9.4/lib/isc/unix/socket.c

--- bind-9.9.4/lib/isc/unix/socket.c.send_buffers	2013-10-31 14:22:20.293811608 +0100

+++ bind-9.9.4/lib/isc/unix/socket.c	2013-10-31 14:22:20.330811673 +0100

@@ -510,6 +510,11 @@ isc__socket_sendtov(isc_socket_t *sock,

 		    isc_task_t *task, isc_taskaction_t action, const void *arg,

 		    isc_sockaddr_t *address, struct in6_pktinfo *pktinfo);

 ISC_SOCKETFUNC_SCOPE isc_result_t

+isc__socket_sendtov2(isc_socket_t *sock, isc_bufferlist_t *buflist,

+		     isc_task_t *task, isc_taskaction_t action, const void *arg,

+		     isc_sockaddr_t *address, struct in6_pktinfo *pktinfo,

+		     unsigned int flags);

+ISC_SOCKETFUNC_SCOPE isc_result_t

 isc__socket_sendto2(isc_socket_t *sock, isc_region_t *region,

 		    isc_task_t *task,

 		    isc_sockaddr_t *address, struct in6_pktinfo *pktinfo,

@@ -4796,15 +4801,25 @@ ISC_SOCKETFUNC_SCOPE isc_result_t

 isc__socket_sendv(isc_socket_t *sock, isc_bufferlist_t *buflist,

 		  isc_task_t *task, isc_taskaction_t action, const void *arg)

 {

-	return (isc__socket_sendtov(sock, buflist, task, action, arg, NULL,

-				    NULL));

+	return (isc__socket_sendtov2(sock, buflist, task, action, arg, NULL,

+				     NULL, 0));

 }

 ISC_SOCKETFUNC_SCOPE isc_result_t

-isc__socket_sendtov(isc_socket_t *sock0, isc_bufferlist_t *buflist,

+isc__socket_sendtov(isc_socket_t *sock, isc_bufferlist_t *buflist,

 		    isc_task_t *task, isc_taskaction_t action, const void *arg,

 		    isc_sockaddr_t *address, struct in6_pktinfo *pktinfo)

 {

+	return (isc__socket_sendtov2(sock, buflist, task, action, arg, address,

+				     pktinfo, 0));

+}

+

+ISC_SOCKETFUNC_SCOPE isc_result_t

+isc__socket_sendtov2(isc_socket_t *sock0, isc_bufferlist_t *buflist,

+		     isc_task_t *task, isc_taskaction_t action, const void *arg,

+		     isc_sockaddr_t *address, struct in6_pktinfo *pktinfo,

+		     unsigned int flags)

+{

 	isc__socket_t *sock = (isc__socket_t *)sock0;

 	isc_socketevent_t *dev;

 	isc__socketmgr_t *manager;

@@ -4837,7 +4852,7 @@ isc__socket_sendtov(isc_socket_t *sock0,

 		buffer = ISC_LIST_HEAD(*buflist);

 	}

-	return (socket_send(sock, dev, task, address, pktinfo, 0));

+	return (socket_send(sock, dev, task, address, pktinfo, flags));

 }

 ISC_SOCKETFUNC_SCOPE isc_result_t