+diff -Nur iptables-1.3.4/extensions/libipt_string.c iptables-1.3.4-openwrt/extensions/libipt_string.c
+--- iptables-1.3.4/extensions/libipt_string.c 2005-10-31 20:03:50.000000000 +0100
++++ iptables-1.3.4-openwrt/extensions/libipt_string.c 2005-12-15 15:08:27.000000000 +0100
+@@ -63,7 +63,7 @@
+ }
+
+ static void
+-parse_string(const unsigned char *s, struct ipt_string_info *info)
++parse_string(const char *s, struct ipt_string_info *info)
+ {
+ if (strlen(s) <= IPT_STRING_MAX_PATTERN_SIZE) {
+ strncpy(info->pattern, s, IPT_STRING_MAX_PATTERN_SIZE);
+@@ -74,7 +74,7 @@
+ }
+
+ static void
+-parse_algo(const unsigned char *s, struct ipt_string_info *info)
++parse_algo(const char *s, struct ipt_string_info *info)
+ {
+ if (strlen(s) <= IPT_STRING_MAX_ALGO_NAME_SIZE) {
+ strncpy(info->algo, s, IPT_STRING_MAX_ALGO_NAME_SIZE);
+@@ -84,7 +84,7 @@
+ }
+
+ static void
+-parse_hex_string(const unsigned char *s, struct ipt_string_info *info)
++parse_hex_string(const char *s, struct ipt_string_info *info)
+ {
+ int i=0, slen, sindex=0, schar;
+ short hex_f = 0, literal_f = 0;