Only in httpd-2.4.3: CHANGES.orig
diff -ur httpd-2.4.3.orig/include/ap_mmn.h httpd-2.4.3/include/ap_mmn.h
--- httpd-2.4.3.orig/include/ap_mmn.h	2012-07-28 16:40:23.000000000 +0200
+++ httpd-2.4.3/include/ap_mmn.h	2012-11-11 13:20:28.000000000 +0100
@@ -403,7 +403,7 @@
 #ifndef MODULE_MAGIC_NUMBER_MAJOR
 #define MODULE_MAGIC_NUMBER_MAJOR 20120211
 #endif
-#define MODULE_MAGIC_NUMBER_MINOR 11                   /* 0...n */
+#define MODULE_MAGIC_NUMBER_MINOR 12                   /* 0...n */
 
 /**
  * Determine if the server's current MODULE_MAGIC_NUMBER is at least a
Only in httpd-2.4.3/include: ap_mmn.h.orig
Only in httpd-2.4.3/include: ap_mmn.h.rej
diff -ur httpd-2.4.3.orig/include/http_request.h httpd-2.4.3/include/http_request.h
--- httpd-2.4.3.orig/include/http_request.h	2012-01-09 14:18:26.000000000 +0100
+++ httpd-2.4.3/include/http_request.h	2012-11-11 13:19:38.000000000 +0100
@@ -528,6 +528,16 @@
  */
 AP_DECLARE_HOOK(void,insert_filter,(request_rec *r))
 
+/**
+ * This hook allows modules to affect the request immediately after the
+ * per-directory configuration for the request has been generated.
+ * @param r The current request
+ * @return OK (allow acces), DECLINED (let later modules decide),
+ *         or HTTP_... (deny access)
+ * @ingroup hooks
+ */
+AP_DECLARE_HOOK(int,post_perdir_config,(request_rec *r))
+
 AP_DECLARE(int) ap_location_walk(request_rec *r);
 AP_DECLARE(int) ap_directory_walk(request_rec *r);
 AP_DECLARE(int) ap_file_walk(request_rec *r);
diff -ur httpd-2.4.3.orig/server/request.c httpd-2.4.3/server/request.c
--- httpd-2.4.3.orig/server/request.c	2012-08-11 14:42:25.000000000 +0200
+++ httpd-2.4.3/server/request.c	2012-11-11 13:19:38.000000000 +0100
@@ -69,6 +69,7 @@
     APR_HOOK_LINK(auth_checker)
     APR_HOOK_LINK(insert_filter)
     APR_HOOK_LINK(create_request)
+    APR_HOOK_LINK(post_perdir_config)
 )
 
 AP_IMPLEMENT_HOOK_RUN_FIRST(int,translate_name,
@@ -90,6 +91,8 @@
 AP_IMPLEMENT_HOOK_VOID(insert_filter, (request_rec *r), (r))
 AP_IMPLEMENT_HOOK_RUN_ALL(int, create_request,
                           (request_rec *r), (r), OK, DECLINED)
+AP_IMPLEMENT_HOOK_RUN_ALL(int, post_perdir_config,
+                          (request_rec *r), (r), OK, DECLINED)
 
 static int auth_internal_per_conf = 0;
 static int auth_internal_per_conf_hooks = 0;
@@ -191,6 +194,10 @@
         r->log = d->log;
     }
 
+    if ((access_status = ap_run_post_perdir_config(r))) {
+        return access_status;
+    }
+
     /* Only on the main request! */
     if (r->main == NULL) {
         if ((access_status = ap_run_header_parser(r))) {