diff -Naur libnetfilter_conntrack-0.9.1/include/libnetfilter_conntrack/libnetfilter_conntrack.h libnetfilter_conntrack-0.9.1.mod/include/libnetfilter_conntrack/libnetfilter_conntrack.h
--- libnetfilter_conntrack-0.9.1/include/libnetfilter_conntrack/libnetfilter_conntrack.h	2011-02-22 17:59:28.000000000 +0530
+++ libnetfilter_conntrack-0.9.1.mod/include/libnetfilter_conntrack/libnetfilter_conntrack.h	2013-04-10 14:33:45.000000000 +0530
@@ -681,6 +681,10 @@
 	/* Conntrack is a fake untracked entry */
 	IPS_UNTRACKED_BIT = 12,
 	IPS_UNTRACKED = (1 << IPS_UNTRACKED_BIT),
+
+	   /* Connection  cannot expire */
+	IPS_PERMANENT_BIT = 24,
+	IPS_PERMANENT = (1 << IPS_PERMANENT_BIT),
 };
 
 /* expectation flags */