rearrange includes to try and fix build issues.
(Logical change 1.6)
diff --git a/ip/iptunnel.c b/ip/iptunnel.c
index 41c262b..45b904b 100644
--- a/ip/iptunnel.c
+++ b/ip/iptunnel.c
@@ -23,12 +23,13 @@
#include <syslog.h>
#include <fcntl.h>
#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
#include <sys/ioctl.h>
+#include <asm/byteorder.h>
#include <linux/if.h>
#include <linux/if_arp.h>
-#include <netinet/in.h>
-#include <netinet/ip.h>
-#include <arpa/inet.h>
+#include <linux/ip.h>
#include <linux/if_tunnel.h>
#include "rt_names.h"