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diff --git a/misc/network_servers/vtl/util.h b/misc/network_servers/vtl/util.h
new file mode 100644
index 0000000..9cf520d
--- /dev/null
+++ b/misc/network_servers/vtl/util.h
@@ -0,0 +1,121 @@
+#ifndef _util
+#define _util
+
+
+#include <stdio.h>
+#include <iostream>
+#include <string>
+
+
+#ifdef linux
+#include <sys/socket.h>
+#include <unistd.h>
+#include <errno.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netinet/in.h>
+#elif defined(WIN32)
+
+#include <io.h>
+#include <Winsock2.h>
+#define read _read
+#define write _write
+
+#define EWOULDBLOCK WSAEWOULDBLOCK
+
+typedef int socklen_t;
+#endif
+
+
+
+
+
+#define ETHERNET_HEADER_LEN 14
+#define ETHERNET_DATA_MIN   46
+#define ETHERNET_DATA_MAX   1500
+
+#define ETHERNET_PACKET_LEN (ETHERNET_HEADER_LEN+ETHERNET_DATA_MAX)
+
+
+#if defined(USE_SSL)
+extern "C" {
+#define OPENSSL_NO_KRB5
+#include <openssl/ssl.h>
+}
+#endif
+
+using namespace std;
+
+#if defined(USE_SSL)
+int readall(const int fd, SSL * ssl, char * buf, const int len, const int oneshot = 0, const int awaitblock = 1);
+int writeall(const int fd, SSL * ssl, const char * buf, const int len, const int oneshot = 0, const int awaitblock = 1);
+#endif
+int readall(const int fd, char * buf, const int len, const int oneshot = 0, const int awaitblock = 1);
+int writeall(const int fd, const char * buf, const int len, const int oneshot = 0, const int awaitblock = 1);
+
+
+
+#if defined(WIN32) 
+#define snprintf _snprintf
+#endif
+
+
+int compare_nocase(const string &s1, const string &s2);
+
+struct SerializationException {};
+
+void printhexnybble(FILE * out,const char lower);
+void printhexbyte(FILE * out,const char h);
+void printhexshort(FILE * out,const short h);
+void printhexint(FILE * out,const int h);
+void printhexbuffer(FILE * out, const char * buf, const int len);
+
+void hexbytetobyte(const char hexbyte[2], char * byte);
+void bytetohexbyte(const char byte, char hexbyte[2]);
+
+void ConvertHexEthernetAddressToBinary(const char * string, char address[6]);
+void ConvertBinaryEthernetAddressToHex(char address[6], char * string);
+
+// How about a function that you might actually use...
+void mac_to_string(char address[6], char * buf);
+void mac_to_string(char address[6], string * str);
+void string_to_mac(string str, char mac[6]);
+void string_to_mac(const char * str, char mac[6]);
+
+void ip_to_string(unsigned long addr, string * str);
+void ip_to_string(unsigned long addr, char * buf);
+const char * ip_to_string(unsigned long addr);
+
+typedef char EthernetAddrString[(2 * 6) + 6];
+
+
+struct EthernetAddr {
+  char addr[6];
+
+  EthernetAddr();
+  EthernetAddr(const EthernetAddr &rhs);
+  EthernetAddr(const EthernetAddrString rhs);
+  const EthernetAddr & operator=(const EthernetAddr &rhs);
+
+  bool operator==(const EthernetAddr &rhs) const;
+ 
+  void SetToString(const EthernetAddrString s);
+  void GetAsString(EthernetAddrString s) const;
+  
+#if defined(USE_SSL)
+  void Serialize(const int fd, SSL * ssl) const;
+  void Unserialize(const int fd,SSL * ssl);
+#endif
+  void Serialize(const int fd) const;
+  void Unserialize(const int fd);
+
+
+  ostream & Print(ostream &os) const;
+};
+
+inline ostream & operator<<(ostream &os, const EthernetAddr &e)
+{
+  return e.Print(os);
+}
+
+#endif