diff --git a/Makefile.in b/Makefile.in
index 4384ca807..109556921 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -55,9 +55,9 @@ INSTALLNMAPFE=@INSTALLNMAPFE@
 INSTALLNSE=@INSTALLNSE@
 
 ifneq (@LIBLUA_LIBS@,)
-NSE_SRC=nse_main.cc nse_auxiliar.cc nse_nsock.cc nse_init.cc nse_nmaplib.cc nse_debug.cc nse_pcrelib.cc nse_string.cc
-NSE_HDRS=nse_main.h nse_auxiliar.h nse_nsock.h nse_init.h nse_nmaplib.h nse_debug.h nse_macros.h nse_pcrelib.h nse_string.h
-NSE_OBJS=nse_main.o nse_auxiliar.o nse_nsock.o nse_init.o nse_nmaplib.o nse_debug.o nse_pcrelib.o nse_string.o
+NSE_SRC=nse_main.cc nse_auxiliar.cc nse_nsock.cc nse_init.cc nse_nmaplib.cc nse_debug.cc nse_pcrelib.cc nse_string.cc nse_bitlib.cc
+NSE_HDRS=nse_main.h nse_auxiliar.h nse_nsock.h nse_init.h nse_nmaplib.h nse_debug.h nse_macros.h nse_pcrelib.h nse_string.h nse_bitlib.h
+NSE_OBJS=nse_main.o nse_auxiliar.o nse_nsock.o nse_init.o nse_nmaplib.o nse_debug.o nse_pcrelib.o nse_string.o nse_bitlib.o
 NSESTDLIB=nsestdlib
 endif
 
diff --git a/nse_bitlib.cc b/nse_bitlib.cc
new file mode 100644
index 000000000..96b793c54
--- /dev/null
+++ b/nse_bitlib.cc
@@ -0,0 +1,75 @@
+/* Bitwise operations library 
+ * by Reuben Thomas (rrt@sc3d.org)
+ * bitlib is a C library for Lua 5.x that provides bitwise operations
+ * It is copyright Reuben Thomas 2000-2006, and is released under the
+ * MIT license, like Lua (see http://www.lua.org/copyright.html for the
+ * full license; it's basically the same as the BSD license). There is no
+ * warranty.
+ * the most recent copy can be found at http://rrt.sc3d.org/Software/Lua/
+ **/
+
+extern "C" {
+#include "lauxlib.h"
+#include "lua.h"
+}
+
+#include "nse_bitlib.h"
+
+typedef long long Integer;
+typedef unsigned long long UInteger;
+
+#define luaL_checkbit(L, n)  ((Integer)luaL_checknumber(L, n))
+#define luaL_checkubit(L, n) ((UInteger)luaL_checkbit(L, n))
+
+#define TDYADIC(name, op, checkbit1, checkbit2) \
+  static int bit_ ## name(lua_State* L) { \
+    lua_pushnumber(L, \
+      checkbit1(L, 1) op checkbit2(L, 2)); \
+    return 1; \
+  }
+
+#define DYADIC(name, op) \
+  TDYADIC(name, op, luaL_checkbit, luaL_checkbit)
+
+#define MONADIC(name, op) \
+  static int bit_ ## name(lua_State* L) { \
+    lua_pushnumber(L, op luaL_checkbit(L, 1)); \
+    return 1; \
+  }
+
+#define VARIADIC(name, op) \
+  static int bit_ ## name(lua_State *L) { \
+    int n = lua_gettop(L), i; \
+    Integer w = luaL_checkbit(L, 1); \
+    for (i = 2; i <= n; i++) \
+      w op luaL_checkbit(L, i); \
+    lua_pushnumber(L, w); \
+    return 1; \
+  }
+
+MONADIC(bnot,     ~)
+VARIADIC(band,    &=)
+VARIADIC(bor,     |=)
+VARIADIC(bxor,    ^=)
+TDYADIC(lshift,  <<, luaL_checkbit, luaL_checkubit)
+TDYADIC(rshift,  >>, luaL_checkubit, luaL_checkubit)
+TDYADIC(arshift, >>, luaL_checkbit, luaL_checkubit)
+DYADIC(mod,      %)
+
+static const struct luaL_reg bitlib[] = {
+  {"bnot",    bit_bnot},
+  {"band",    bit_band},
+  {"bor",     bit_bor},
+  {"bxor",    bit_bxor},
+  {"lshift",  bit_lshift},
+  {"rshift",  bit_rshift},
+  {"arshift", bit_arshift},
+  {"mod",     bit_mod},
+  {NULL, NULL}
+};
+
+LUALIB_API int luaopen_bitlib (lua_State *L) {
+  luaL_openlib(L, NSE_BITLIBNAME, bitlib, 0);
+  return 1;
+}
+
diff --git a/nse_bitlib.h b/nse_bitlib.h
new file mode 100644
index 000000000..1cc338605
--- /dev/null
+++ b/nse_bitlib.h
@@ -0,0 +1,9 @@
+#ifndef NSE_BITLIB
+#define NSE_BITLIB
+
+#define NSE_BITLIBNAME "bit"
+
+LUALIB_API int luaopen_bitlib (lua_State *L);
+
+#endif
+
diff --git a/nse_init.cc b/nse_init.cc
index 181aa6ee3..0de2873c2 100644
--- a/nse_init.cc
+++ b/nse_init.cc
@@ -4,6 +4,7 @@
 #include "nse_debug.h"
 
 // 3rd Party libs
+#include "nse_bitlib.h"
 #include "nse_pcrelib.h"
 
 #include "nbase.h"
@@ -44,6 +45,7 @@ int init_lua(lua_State* l) {
 		{LUA_STRLIBNAME, luaopen_string},
 		{LUA_MATHLIBNAME, luaopen_math},
 		{LUA_DBLIBNAME, luaopen_debug},
+		{NSE_BITLIBNAME, luaopen_bitlib},
 		{NSE_PCRELIBNAME, luaopen_pcrelib},
 		{NULL, NULL}
 	}; 
diff --git a/scripts/dns-test-open-recursion.nse b/scripts/dns-test-open-recursion.nse
index 20f7176fa..5cbad2446 100644
--- a/scripts/dns-test-open-recursion.nse
+++ b/scripts/dns-test-open-recursion.nse
@@ -8,7 +8,7 @@ license = "See nmaps COPYING for licence"
 
 categories = {"intrusive"}
 
-require "bit"
+-- require "bit"
 
 portrule = function(host, port)
 	if 	port.number == 53