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Re: problem in tcp checksum?

Subject: Re: problem in tcp checksum?
Date: Fri, 3 Dec 2004 17:46:44 -0800
The latest version of libnet 1.1.x, to be released soon, has this and other bugs fixed.

On Dec 3, 2004, at 3:38 PM, Shai Rubin wrote:

Dear libnet users/developers,

I have recently switched from libnet version 1.1.0 to version 1.1.2.1.

Unfortunately, my code stops working.


It seems to me that there is a problem in the tcp checksum mechanism in the new version. When I trace my packets with tcpdump I get "bad tcp cksum" if a packet that I send has an odd number of bytes. If the packet has an even number of bytes, then the tcp checksum is OK. This does not happen when I compile my program with the older version of libnet.


Anyone has a similar problem?

Thanks,

Shai Rubin




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Mike Schiffman, CISSP
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Doveryay No Proveryay

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