UPD receiving error while sending ok

Hi,

I have used two ways to receive upd:

case 1: I used "DE2_UDP example" from http://www.btxsistemas.com.ar/net2.zip to send upd to PC,it's ok.But the received upd from PC always were not right.

Wireshark displayed as:

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Source:Twinhead

Destination:Broadvast

Protocol:upd

Info:Whi has 192.168.253.8?

0000 ff ff ff ff ff ff 00 40 45 00 6e 69 08 06 00 01 .......@ E.ni....

0010 08 00 06 04 00 01 00 40 45 00 6e 69 c0 a8 fd 04 .......@ E.ni....

0020 00 00 00 00 00 00 c0 a8 fd 08

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

The message on the console from the board was:

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Receive Packet Length = 64

FF,FF,FF,FF,FF,FF, 0,40,45, 0,6E,69, 8, 6, 0, 1,

8, 0, 6, 4, 0, 1, 0,40,45, 0,6E,69,C0,A8,FD, 4,

0, 0, 0, 0, 0, 0,C0,A8,FD, 8,FF,FF,FF,FF,FF,FF,

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

case 2: I used SimpleSocketServer to send upd to the board from PC,Wireshark displayed as:

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Source:192.168.253.4

Destination:192.168.253.8

Protocol:upd

Info:Source port: 1024,Destination port: 1024

0000 01 60 6e 11 02 0f 00 40 45 00 6e 69 08 00 45 00 .`n....@ E.ni..E.

0010 00 32 00 24 00 00 40 11 ff 38 c0 a8 fd 04 c0 a8 .2.$..@. .8......

0020 fd 08 04 00 04 00 00 1e 48 2d 31 39 32 2e 31 36 ........ H-192.16

0030 38 2e 32 35 33 2e 38 32 30 31 30 30 39 32 30 31 8.253.82 01009201

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

The content"192.168.253.8201009201" above was exactly the data I send to the board.

It seems that in case 1 I have to declare that the IP of the board is 192.168.253.8.first.If it does,then how to declare the IP address.Since I does not like to use UCOSII in my system,so I have to solve the receive problem in case 1.

Looking for help.

Thanks in advance.