--- ./cfgfile.c.orig	2007-07-14 19:21:12.000000000 +0400
+++ ./cfgfile.c	2007-07-14 19:22:48.000000000 +0400
@@ -71,8 +71,11 @@
 
     fp = fopen(f, "rt");
     if (!fp) {
-        if(whinge) fprintf(stderr, "%s: %s\n", f, strerror(errno)); 
-        goto fail;
+        fp = fopen(SYSCONFDIR"/iftoprc", "rt");
+        if (!fp) {
+            if(whinge) fprintf(stderr, "%s: %s\n", f, strerror(errno));
+            goto fail;
+        }
     }
 
     while (fgets(line, MAX_CONFIG_LINE, fp)) {
--- ./configure.in.orig	2007-07-14 18:58:22.000000000 +0400
+++ ./configure.in	2007-07-14 19:08:43.000000000 +0400
@@ -436,6 +436,20 @@
 	AC_DEFINE([NEED_PROMISCUOUS_FOR_OUTGOING],1,[Enable default promiscuous mode to capture outgoing packets])
 fi
 
+# Create SYSCONFDIR #define for config.h
+sysconffiledir=$sysconfdir
+sysconffiledir=`(
+    test "x$prefix" = xNONE && prefix=$ac_default_prefix
+    test "x$exec_prefix" = xNONE && exec_prefix=${prefix}
+    # Ugly hack, but I don't see how this problem can be solved
+    # properly that DATAFILE_DIR had a value starting with
+    # "${prefix}/" instead of e.g. "/usr/local/"
+    eval eval echo "$sysconfdir"
+)`
+echo SEE: $sysconffiledir
+AC_DEFINE_UNQUOTED(SYSCONFDIR,"$sysconffiledir", [Sysconf Directory])
+
+
 dnl
 dnl Wahey! This might even work.
 dnl