diff --git a/plugins/dev9ghzdrk/DEV9.cpp b/plugins/dev9ghzdrk/DEV9.cpp
index ff5bd62849..a7bc12da1d 100644
--- a/plugins/dev9ghzdrk/DEV9.cpp
+++ b/plugins/dev9ghzdrk/DEV9.cpp
@@ -56,7 +56,7 @@ u32 *iopPC;
 
 const unsigned char version  = PS2E_DEV9_VERSION;
 const unsigned char revision = 0;
-const unsigned char build    = 3;    // increase that with each version
+const unsigned char build    = 4;    // increase that with each version
 
 
 static char *libraryName     = "GiGaHeRz's DEV9 Driver"
diff --git a/plugins/dev9ghzdrk/Win32/pcap_io.h b/plugins/dev9ghzdrk/Win32/pcap_io.h
index ea938b233f..bc8e4d8250 100644
--- a/plugins/dev9ghzdrk/Win32/pcap_io.h
+++ b/plugins/dev9ghzdrk/Win32/pcap_io.h
@@ -143,7 +143,7 @@ typedef struct _full_arp_packet
 
 extern mac_address virtual_mac;
 extern mac_address broadcast_mac;
-
+extern mac_address gateway_mac;
 extern ip_address virtual_ip;
 
 #define mac_compare(a,b) (memcmp(&(a),&(b),6))
diff --git a/plugins/dev9ghzdrk/Win32/socket_io.cpp b/plugins/dev9ghzdrk/Win32/socket_io.cpp
index 59b6677364..f135f8be31 100644
--- a/plugins/dev9ghzdrk/Win32/socket_io.cpp
+++ b/plugins/dev9ghzdrk/Win32/socket_io.cpp
@@ -29,10 +29,10 @@ extern "C" {
 #include <vector>
 
 //extern "C" int emu_printf(const char *fmt, ...);
-
-mac_address gateway_mac   = { 0x76, 0x6D, 0x61, 0x63, 0x30, 0x32 };
-mac_address virtual_mac   = { 0x76, 0x6D, 0x61, 0x63, 0x30, 0x31 };
-mac_address broadcast_mac = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
+/*
+mac_address gateway_mac   = { 0x76, 0x6D, 0x61, 0x63, 0x31, 0x32 };
+mac_address virtual_mac   = { 0x76, 0x6D, 0x61, 0x63, 0x31, 0x31 };
+mac_address broadcast_mac = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };*/
 
 //mac_address host_mac = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
 
diff --git a/plugins/dev9ghzdrk/pcap_io.cpp b/plugins/dev9ghzdrk/pcap_io.cpp
index 3854952087..8f2ee32c42 100644
--- a/plugins/dev9ghzdrk/pcap_io.cpp
+++ b/plugins/dev9ghzdrk/pcap_io.cpp
@@ -32,12 +32,13 @@ pcap_m_e pcap_mode=switched;
 mac_address virtual_mac   = { 0x76, 0x6D, 0x61, 0x63, 0x30, 0x31 };
 //mac_address virtual_mac   = { 0x6D, 0x76, 0x63, 0x61, 0x31, 0x30 };
 mac_address broadcast_mac = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
+mac_address gateway_mac = { 0x76, 0x6D, 0x61, 0x63, 0x31, 0x32 };
 
 ip_address virtual_ip = { 192, 168, 1, 4};
 
 pcap_t *adhandle;
 int pcap_io_running=0;
-
+extern u8 eeprom[];
 char errbuf[PCAP_ERRBUF_SIZE];
 
 char namebuff[256];
@@ -82,14 +83,25 @@ int pcap_io_init(char *adapter)
 	int dlt;
 	char *dlt_name;
 	emu_printf("Opening adapter '%s'...",adapter);
-
+	u16 checksum;
 	GetMACAddress(adapter,&host_mac);
 	
-	//Lets take the hosts first 3 bytes to bytes to make it unique
-	virtual_mac.bytes[0] = host_mac.bytes[0]; 
-	virtual_mac.bytes[1] = host_mac.bytes[1];
-	virtual_mac.bytes[2] = host_mac.bytes[2];
-		
+	//Near copy of the host mac, butchered slightly, should be pretty good!
+	eeprom[0] = host_mac.bytes[0];
+	eeprom[1] = host_mac.bytes[1];
+	eeprom[2] = host_mac.bytes[2];
+	eeprom[3] = host_mac.bytes[2];
+	eeprom[4] = host_mac.bytes[5];
+	eeprom[5] = host_mac.bytes[4];
+
+	//The checksum seems to be all the values of the mac added up in 16bit chunks
+	checksum = dev9.eeprom[0] + dev9.eeprom[1] + dev9.eeprom[2] & 0xffff;
+
+	dev9.eeprom[3] = checksum;
+
+	//emu_printf("eeprom Mac set to %x %x %x %x %x %x", eeprom[0], eeprom[1], eeprom[2], eeprom[3], eeprom[4], eeprom[5]);
+	//emu_printf("Checksum %x %x", eeprom[6], eeprom[7]);
+	
 	/* Open the adapter */
 	if ((adhandle= pcap_open_live(adapter,	// name of the device
 							 65536,			// portion of the packet to capture.