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diff --git a/misc/network_servers/vtl/vtl_harness.h b/misc/network_servers/vtl/vtl_harness.h
new file mode 100644
index 0000000..55a25b0
--- /dev/null
+++ b/misc/network_servers/vtl/vtl_harness.h
@@ -0,0 +1,49 @@
+#ifndef VTL_HARNESS_H
+#define VTL_HARNESS_H
+
+#include "vtl.h"
+
+#ifdef linux
+#include <fcntl.h>
+#define POLL_TIMEOUT 0
+#define MAX_VTL_CONS 100
+
+#define HOME "./"
+#define VTP_FIFO_SENDFILE HOME "vtp_fifo_send"
+#define VTP_FIFO_RECVFILE HOME "vtp_fifo_recv"
+#endif
+
+struct VTL_CON {
+  /*  unsigned long rem_seq_num;
+      unsigned long dest_ip;
+      unsigned long src_ip;
+      unsigned short src_port;
+      unsigned short dest_port;
+      RawEthernetPacket ack_template;
+      unsigned short ip_id;
+      unsigned long tcp_timestamp;
+  */
+  
+  vtl_model_t con_model;
+
+  bool in_use;
+  int next;
+  int prev;
+};
+
+#define FOREACH_VTL_CON(iter, cons) for (iter = g_first_vtl; iter != -1; iter = cons[iter].next) 
+
+
+
+/* Sending Layers Need to implement these */
+int vtl_init();
+int vtl_send(RawEthernetPacket * p, unsigned long serv_addr);
+int vtl_recv(RawEthernetPacket ** p);
+int vtl_connect(unsigned long serv_addr, unsigned short serv_port);
+int vtl_close(unsigned long serv_addr);
+
+
+int register_fd(SOCK fd);
+int unregister_fd(SOCK fd);
+
+#endif