D'oh .. I'm not too smart, forgot to add the new files in the previous patches :)
diff --git a/extensions/libipt_CONNSECMARK.c b/extensions/libipt_CONNSECMARK.c
new file mode 100644
index 0000000..237a41f
--- /dev/null
+++ b/extensions/libipt_CONNSECMARK.c
@@ -0,0 +1,126 @@
+/*
+ * Shared library add-on to iptables to add CONNSECMARK target support.
+ *
+ * Based on the MARK and CONNMARK targets.
+ *
+ * Copyright (C) 2006 Red Hat, Inc., James Morris <jmorris@redhat.com>
+ */
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include <iptables.h>
+#include <linux/netfilter/xt_CONNSECMARK.h>
+
+#define PFX "CONNSECMARK target: "
+
+static void help(void)
+{
+ printf(
+"CONNSECMARK target v%s options:\n"
+" --save Copy security mark from packet to conntrack\n"
+" --restore Copy security mark from connection to packet\n"
+"\n",
+IPTABLES_VERSION);
+}
+
+static struct option opts[] = {
+ { "save", 0, 0, '1' },
+ { "restore", 0, 0, '2' },
+ { 0 }
+};
+
+static int parse(int c, char **argv, int invert, unsigned int *flags,
+ const struct ipt_entry *entry, struct ipt_entry_target **target)
+{
+ struct xt_connsecmark_target_info *info =
+ (struct xt_connsecmark_target_info*)(*target)->data;
+
+ switch (c) {
+ case '1':
+ if (*flags & CONNSECMARK_SAVE)
+ exit_error(PARAMETER_PROBLEM, PFX
+ "Can't specify --save twice");
+ info->mode = CONNSECMARK_SAVE;
+ *flags |= CONNSECMARK_SAVE;
+ break;
+
+ case '2':
+ if (*flags & CONNSECMARK_RESTORE)
+ exit_error(PARAMETER_PROBLEM, PFX
+ "Can't specify --restore twice");
+ info->mode = CONNSECMARK_RESTORE;
+ *flags |= CONNSECMARK_RESTORE;
+ break;
+
+ default:
+ return 0;
+ }
+
+ return 1;
+}
+
+static void final_check(unsigned int flags)
+{
+ if (!flags)
+ exit_error(PARAMETER_PROBLEM, PFX "parameter required");
+
+ if (flags == (CONNSECMARK_SAVE|CONNSECMARK_RESTORE))
+ exit_error(PARAMETER_PROBLEM, PFX "only one flag of --save "
+ "or --restore is allowed");
+}
+
+static void print_connsecmark(struct xt_connsecmark_target_info *info)
+{
+ switch (info->mode) {
+ case CONNSECMARK_SAVE:
+ printf("save ");
+ break;
+
+ case CONNSECMARK_RESTORE:
+ printf("restore ");
+ break;
+
+ default:
+ exit_error(OTHER_PROBLEM, PFX "invalid mode %hhu\n", info->mode);
+ }
+}
+
+static void print(const struct ipt_ip *ip,
+ const struct ipt_entry_target *target, int numeric)
+{
+ struct xt_connsecmark_target_info *info =
+ (struct xt_connsecmark_target_info*)(target)->data;
+
+ printf("CONNSECMARK ");
+ print_connsecmark(info);
+}
+
+static void save(const struct ipt_ip *ip, const struct ipt_entry_target *target)
+{
+ struct xt_connsecmark_target_info *info =
+ (struct xt_connsecmark_target_info*)target->data;
+
+ printf("--");
+ print_connsecmark(info);
+}
+
+static struct iptables_target connsecmark = {
+ .next = NULL,
+ .name = "CONNSECMARK",
+ .version = IPTABLES_VERSION,
+ .revision = 0,
+ .size = IPT_ALIGN(sizeof(struct xt_connsecmark_target_info)),
+ .userspacesize = IPT_ALIGN(sizeof(struct xt_connsecmark_target_info)),
+ .parse = &parse,
+ .help = &help,
+ .final_check = &final_check,
+ .print = &print,
+ .save = &save,
+ .extra_opts = opts
+};
+
+void _init(void)
+{
+ register_target(&connsecmark);
+}