IP Header Checksum Error

[subasuma]

we have created a socket program (using winsock control ) in Visual
Basic under windows 2000 platform .
we use UDP protocol for data transfer. And using this application we are
transfering data from a PC to our custom Board through 1000 base T
Fibre Optic Ethernet card...

While transferiing data from Pc to the Board .. we are getting IP
Header Checksum Error


Ethernet II:
Header checksum 0X0000: [incorrect,should be 0Xf2a0]


What is the cause of this error.. does any changes need to be made in
the VB application to clear this error.. or any compatiblity problem


can any one help me to sort out this problem?


suma

[philkr]

I doubt it is a software error, because the Windows Socket API is above the IP protocol layer, where the error obviously occured.

Can you verify that it is not the fibre optic which causes the problems?