zte's code,first commit

Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/app/iptables/extensions/libxt_socket.man b/ap/app/iptables/extensions/libxt_socket.man
new file mode 100755
index 0000000..50c8854
--- /dev/null
+++ b/ap/app/iptables/extensions/libxt_socket.man
@@ -0,0 +1,2 @@
+This matches if an open socket can be found by doing a socket lookup on the
+packet.