diff --git a/bin/dig/dig.c b/bin/dig/dig.c
index ad712ea24c..291957db54 100644
--- a/bin/dig/dig.c
+++ b/bin/dig/dig.c
@@ -36,7 +36,7 @@ extern ISC_LIST(dig_lookup_t) lookup_list;
 extern ISC_LIST(dig_server_t) server_list;
 extern ISC_LIST(dig_searchlist_t) search_list;
 
-extern isc_boolean_t have_ipv6, show_details,
+extern isc_boolean_t have_ipv6, show_details, specified_source,
 	usesearch, qr;
 extern in_port_t port;
 extern unsigned int timeout;
@@ -57,6 +57,7 @@ extern char fixeddomain[MXNAME];
 extern isc_boolean_t twiddle;
 #endif
 extern int exitcode;
+extern isc_sockaddr_t bind_address;
 
 isc_boolean_t short_form = ISC_FALSE, printcmd = ISC_TRUE;
 
@@ -537,6 +538,7 @@ parse_args(isc_boolean_t is_batchfile, int argc, char **argv) {
 	dig_lookup_t *lookup = NULL;
 	char *batchname = NULL;
 	char batchline[MXNAME];
+	char address[MXNAME];
 	FILE *fp = NULL;
 	int bargc;
 	char *bargv[16];
@@ -926,6 +928,18 @@ parse_args(isc_boolean_t is_batchfile, int argc, char **argv) {
 				rv++;
 				rc--;
 			}
+		} else if (strncmp(rv[0], "-b", 2) == 0) {
+			if (rv[0][2]!=0) {
+				strncpy(address, &rv[0][2],
+					MXRD);
+			} else {
+				strncpy(address, rv[1],
+					MXRD);
+				rv++;
+				rc--;
+			}
+			get_address(address, 0, &bind_address);
+			specified_source = ISC_TRUE;
 		} else if (strncmp(rv[0], "-h", 2) == 0) {
 			show_usage();
 			exit (exitcode);
diff --git a/bin/dig/dighost.c b/bin/dig/dighost.c
index 0b78aba626..b5f95c6ca9 100644
--- a/bin/dig/dighost.c
+++ b/bin/dig/dighost.c
@@ -24,7 +24,6 @@
  * functions in most applications.
  */
 
-
 #include <config.h>
 
 #include <stdlib.h>
@@ -53,7 +52,7 @@ ISC_LIST(dig_lookup_t) lookup_list;
 ISC_LIST(dig_server_t) server_list;
 ISC_LIST(dig_searchlist_t) search_list;
 
-isc_boolean_t have_ipv6 = ISC_FALSE,
+isc_boolean_t have_ipv6 = ISC_FALSE, specified_source = ISC_FALSE,
 	free_now = ISC_FALSE, show_details = ISC_FALSE, usesearch=ISC_TRUE,
 	qr = ISC_FALSE;
 #ifdef TWIDDLE
@@ -66,6 +65,7 @@ isc_taskmgr_t *taskmgr = NULL;
 isc_task_t *task = NULL;
 isc_timermgr_t *timermgr = NULL;
 isc_socketmgr_t *socketmgr = NULL;
+isc_sockaddr_t bind_address;
 char *rootspace[BUFSIZE];
 isc_buffer_t rootbuf;
 int sendcount = 0;
@@ -1500,6 +1500,10 @@ do_lookup_tcp(dig_lookup_t *lookup) {
 					   isc_sockaddr_pf(&query->sockaddr),
 					   isc_sockettype_tcp, &query->sock) ;
 		check_result(result, "isc_socket_create");
+		if (specified_source) {
+			result = isc_socket_bind(query->sock, &bind_address);
+			check_result(result, "isc_socket_bind");
+		}
 		result = isc_socket_connect(query->sock, &query->sockaddr,
 					    task, connect_done, query);
 		check_result (result, "isc_socket_connect");
@@ -1529,6 +1533,10 @@ do_lookup_udp(dig_lookup_t *lookup) {
 					   isc_sockaddr_pf(&query->sockaddr),
 					   isc_sockettype_udp, &query->sock) ;
 		check_result(result, "isc_socket_create");
+		if (specified_source) {
+			result = isc_socket_bind(query->sock, &bind_address);
+			check_result(result, "isc_socket_bind");
+		}
 	}
 
 	send_udp(lookup);