diff -up iptstate-2.2.1/iptstate.cc.strerror iptstate-2.2.1/iptstate.cc
--- iptstate-2.2.1/iptstate.cc.strerror 2008-02-25 11:35:52.000000000 +0100
+++ iptstate-2.2.1/iptstate.cc 2008-02-25 11:35:04.000000000 +0100
@@ -42,6 +42,7 @@
#include <iostream>
#include <string>
+#include <cstring>
#include <vector>
#include <fstream>
#include <sstream>