The Data packet # 86 (512 bytes) is recieved from the sever.
Sending Ack block # 86
Invalid block number . Ending transcation
<:: TFTPClient ::> mode normal
	MODE = Normal
<:: TFTPClient ::> get test.doc
Server hostname not set. See 'help server' for details 
<:: TFTPClient ::> server localhost:6900
Host name is : localhost at port : 6900 .
<:: TFTPClient ::> get test.doc
The Data packet # 87 (512 bytes) is recieved from the sever.
Sending Ack block # 87
Duplicate Data packet #    87 received. Ignored
Retransmitting Ack block # 87
Duplicate Data packet #    1 received. Ignored
Retransmitting Ack block # 87
Duplicate Data packet #    1 received. Ignored
Retransmitting Ack block # 87
Duplicate Data packet #    1 received. Ignored
Retransmitting Ack block # 87
No reply from the server for 3 seconds. Aborting Transfer.
<:: TFTPClient ::>