--- 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);