--- bind/lib/isc/unix/resource.c
+++ bind/lib/isc/unix/resource.c
@@ -30,6 +30,21 @@
 
 #ifdef __linux__
 #include <linux/fs.h>	/* To get the large NR_OPEN. */
+# ifndef NR_OPEN
+#  define NR_OPEN 1024
+# endif
+# ifndef ISC_SOCKET_MAXSOCKETS
+#  if defined(ISC_PLATFORM_HAVEKQUEUE) || defined(ISC_PLATFORM_HAVEEPOLL) || defined (ISC_PLATFORM_HAVEDEVPOLL)
+#   define ISC_SOCKET_MAXSOCKETS 4096
+#  else
+#   define ISC_SOCKET_MAXSOCKETS NR_OPEN
+#  endif
+# endif
+# if (NR_OPEN > ISC_SOCKET_MAXSOCKETS)
+#  define NR_OPEN_MAX NR_OPEN
+# else
+#  define NR_OPEN_MAX ISC_SOCKET_MAXSOCKETS
+# endif
 #endif
 
 #if defined(__hpux) && defined(HAVE_SYS_DYNTUNE_H)
@@ -165,7 +180,7 @@ isc_resource_setlimit(isc_resource_t resource, isc_resourcevalue_t value) {
 	 * possible value is the NR_OPEN defined in linux/fs.h.
 	 */
 	if (resource == isc_resource_openfiles && rlim_value == RLIM_INFINITY) {
-		rl.rlim_cur = rl.rlim_max = NR_OPEN;
+		rl.rlim_cur = rl.rlim_max = NR_OPEN_MAX;
 		unixresult = setrlimit(unixresource, &rl);
 		if (unixresult == 0)
 			return (ISC_R_SUCCESS);