Revert "DO NOT MERGE: Remove two almost-unused include files."

This reverts commit 86cb1ac3d69805bebcac7a18b408d656603028f4.

Change-Id: If592b80e8107f468c2fe1caf00fcff49f25a9441
diff --git a/clatd.c b/clatd.c
index 1ca46a3..26ecb57 100644
--- a/clatd.c
+++ b/clatd.c
@@ -47,6 +47,8 @@
 
 #include <private/android_filesystem_config.h>
 
+#include "ipv4.h"
+#include "ipv6.h"
 #include "translate.h"
 #include "clatd.h"
 #include "config.h"