finally commit the overly delayed RFC1812 admin prohibited option
diff --git a/extensions/libipt_REJECT.c b/extensions/libipt_REJECT.c
index ba63a0a..8170edd 100644
--- a/extensions/libipt_REJECT.c
+++ b/extensions/libipt_REJECT.c
@@ -9,6 +9,16 @@
#include <iptables.h>
#include <linux/netfilter_ipv4/ip_tables.h>
#include <linux/netfilter_ipv4/ipt_REJECT.h>
+#include <linux/version.h>
+
+/* If we are compiling against a kernel that does not support
+ * IPT_ICMP_ADMIN_PROHIBITED, we are emulating it.
+ * The result will be a plain DROP of the packet instead of
+ * reject. -- Maciej Soltysiak <solt@dns.toxicfilms.tv>
+ */
+#ifndef IPT_ICMP_ADMIN_PROHIBITED
+#define IPT_ICMP_ADMIN_PROHIBITED IPT_TCP_RESET + 1
+#endif
struct reject_names {
const char *name;
@@ -35,7 +45,9 @@
{"icmp-host-prohibited", "host-prohib",
IPT_ICMP_HOST_PROHIBITED, "ICMP host prohibited"},
{"tcp-reset", "tcp-reset",
- IPT_TCP_RESET, "TCP RST packet"}
+ IPT_TCP_RESET, "TCP RST packet"},
+ {"icmp-admin-prohibited", "admin-prohib",
+ IPT_ICMP_ADMIN_PROHIBITED, "ICMP administratively prohibited (*)"}
};
static void
@@ -64,6 +76,8 @@
" a reply packet according to type:\n");
print_reject_types();
+
+ printf("(*) See man page or read the INCOMPATIBILITES file for compatibility issues.\n");
}
static struct option opts[] = {