diff --git a/lib/isc/unix/socket.c b/lib/isc/unix/socket.c
index e7412bd652..ab6aa0b4c9 100644
--- a/lib/isc/unix/socket.c
+++ b/lib/isc/unix/socket.c
@@ -15,7 +15,7 @@
  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: socket.c,v 1.170 2000/10/12 00:35:49 bwelling Exp $ */
+/* $Id: socket.c,v 1.171 2000/11/17 21:04:12 gson Exp $ */
 
 #include <config.h>
 
@@ -975,6 +975,9 @@ doio_send(isc_socket_t *sock, isc_socketevent_t *dev) {
 		SOFT_OR_HARD(ECONNREFUSED, ISC_R_CONNREFUSED);
 		ALWAYS_HARD(EADDRNOTAVAIL, ISC_R_ADDRNOTAVAIL);
 		ALWAYS_HARD(EHOSTUNREACH, ISC_R_HOSTUNREACH);
+#ifdef EHOSTDOWN
+		ALWAYS_HARD(EHOSTDOWN, ISC_R_HOSTUNREACH);
+#endif
 		ALWAYS_HARD(ENETUNREACH, ISC_R_NETUNREACH);
 		ALWAYS_HARD(ENOBUFS, ISC_R_NORESOURCES);
 		ALWAYS_HARD(EPERM, ISC_R_HOSTUNREACH);
@@ -2779,6 +2782,9 @@ isc_socket_connect(isc_socket_t *sock, isc_sockaddr_t *addr,
 			ERROR_MATCH(EAFNOSUPPORT, ISC_R_ADDRNOTAVAIL);
 			ERROR_MATCH(ECONNREFUSED, ISC_R_CONNREFUSED);
 			ERROR_MATCH(EHOSTUNREACH, ISC_R_HOSTUNREACH);
+#ifdef EHOSTDOWN
+			ERROR_MATCH(EHOSTDOWN, ISC_R_HOSTUNREACH);
+#endif
 			ERROR_MATCH(ENETUNREACH, ISC_R_NETUNREACH);
 			ERROR_MATCH(ENOBUFS, ISC_R_NORESOURCES);
 			ERROR_MATCH(EPERM, ISC_R_HOSTUNREACH);
@@ -2918,6 +2924,9 @@ internal_connect(isc_task_t *me, isc_event_t *ev) {
 			ERROR_MATCH(EAFNOSUPPORT, ISC_R_ADDRNOTAVAIL);
 			ERROR_MATCH(ECONNREFUSED, ISC_R_CONNREFUSED);
 			ERROR_MATCH(EHOSTUNREACH, ISC_R_HOSTUNREACH);
+#ifdef EHOSTDOWN
+			ERROR_MATCH(EHOSTDOWN, ISC_R_HOSTUNREACH);
+#endif
 			ERROR_MATCH(ENETUNREACH, ISC_R_NETUNREACH);
 			ERROR_MATCH(ENOBUFS, ISC_R_NORESOURCES);
 			ERROR_MATCH(EPERM, ISC_R_HOSTUNREACH);