IP Header Checksum Bad - C# / C Sharp

rdherric

Hello --

I have code that sends an SNMP packet using the Socket.SendTo method.
When we sniff the packets using Ethereal, the UDP header checksum
appears to be all right, but the IP header checksum is 0x0000. This
results in my SNMP packets being rejected at the server.

Does anybody know anything about why this could be happening?

Thank you --
Robert

Nov 2 '06 #1

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4194

Vadym Stetsyak

Hello, rd******@gmail.com!

Do you use raw sockets?

You wrote on 2 Nov 2006 12:54:10 -0800:
rI have code that sends an SNMP packet using the Socket.SendTo method.
rWhen we sniff the packets using Ethereal, the UDP header checksum
rappears to be all right, but the IP header checksum is 0x0000. This
rresults in my SNMP packets being rejected at the server.

rDoes anybody know anything about why this could be happening?

rThank you --
rRobert
--
With best regards, Vadym Stetsyak.
Blog: http://vadmyst.blogspot.com

Nov 2 '06 #2

rdherric

Vadym Stetsyak wrote:

Do you use raw sockets?

No, we're using the standard System.Net.Sockets.Socket object to
perform the communication.

Thanks --
Robert

Nov 2 '06 #3

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