[Click] About checksum computation ?

[yacine.djemaiel]

I need to compute checksum only for some packets selected and
not for all traffic. If, i have not found a solution, i will
use this element.

Thanks Bart for your help


> Op maandag 1 november 2004 10:03, schreef u:
> > Hi,
> > i would like to compute checksum after modifying an ip header
> > field. I have followed set_cksum method (fromtcpdump.cc), but
> > i get all the time an incorrect ip header checksum. Lines of
> > code that i am using are :
> >
> Why not use the SetIPChecksum element? That's a fine element
that works 
> perfectly...
> 
> Bart
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