RE: Cursed Checksums

[Josan Kadett]

It is what I intend to do, yet could you paste a working source code for;

- sniff data from a chosen interface
- put the same data in the same interface's inbound socket

If I could find how to do this via low-level libraries, I think I could
write an applet to do the mangling.

-----Original Message-----
From: linux-kernel-owner@xxxxxxxxxxxxxxx
[mailto:linux-kernel-owner@xxxxxxxxxxxxxxx] On Behalf Of Olivier Galibert
Sent: Monday, August 23, 2004 12:59 AM
To: linux-kernel@xxxxxxxxxxxxxxx
Subject: Re: Cursed Checksums

Why don't you patch the checksum when you change the IP?  It's just a
not of the sum the 16-bit words so take the old one, not it, add the
two 16-bits differences, re-not it and write it back.

  OG.



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