diff --git a/libc/include/net/ethernet.h b/libc/include/net/ethernet.h
index b1b88dd..47858b3 100644
--- a/libc/include/net/ethernet.h
+++ b/libc/include/net/ethernet.h
@@ -25,8 +25,11 @@
  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
+
 #ifndef _NET_ETHERNET_H_
-#define _NET_IF_ETHERNET_H_
+#define _NET_ETHERNET_H_
+
 #include <linux/if_ether.h>
 #include <net/if_ether.h>
-#endif /* !_NET_ETHERNET_H_ */
+
+#endif
diff --git a/libc/include/net/if.h b/libc/include/net/if.h
index f36f37e..0efbf7f 100644
--- a/libc/include/net/if.h
+++ b/libc/include/net/if.h
@@ -26,9 +26,13 @@
  * SUCH DAMAGE.
  */
 
+#ifndef _NET_IF_H_
+#define _NET_IF_H_
+
 #include <sys/socket.h>
 #include <linux/if.h>
 #include <sys/cdefs.h>
+
 #ifndef IF_NAMESIZE
 #define IF_NAMESIZE IFNAMSIZ
 #endif
@@ -42,3 +46,5 @@
 extern char*        if_indextoname(unsigned ifindex, char *ifname);
 
 __END_DECLS
+
+#endif
diff --git a/libc/include/net/route.h b/libc/include/net/route.h
index d26bfc9..326fbe7 100644
--- a/libc/include/net/route.h
+++ b/libc/include/net/route.h
@@ -1,2 +1,37 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _NET_ROUTE_H_
+#define _NET_ROUTE_H_
+
+#include <sys/socket.h>
 #include <linux/route.h>
+#include <linux/in6.h>
 #include <linux/ipv6_route.h>
+
+#endif