Re: Filter incoming or leaving packets

[Guy Harris <guy () alum mit edu>]

On Mar 3, 2009, at 9:49 AM, Johan Mazel wrote:

> Ok, I'm running libpcap 0.9.8-5 on Ubuntu 8.10.
> Despite that this function is in the man version of libpcap and that  
> I don't
> have any compilation error, it looks like it's not working since I  
> have have
> a segmentation error each time I try to launch a program with the  
> funtion
> inside.
> I tried to use it with something like this: pcap_setdirection(this- 
> >descr,
> PCAP_D_IN); this->descr being a pcap_t * attribute of my class.

You've already opened the device with pcap_open_live(), and assigned  
the result to "descr", right?  (You have to do that before you call  
pcap_setdirection.)
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