Re: Code working with LIBNET_RAW4, not with LIBNET_LINK

On Tue, Jan 18, 2005 at 02:31:06AM -0600, Karen Pease wrote:
> Thank you for your help.  First off, there are no samples that I could find - 
> there were none included with the libnet on my system (installed from a FC3 
> rpm), nor could I find any via google.  Where are they located?  I relied on 
> reading other people's code that was written with libnet, but it was often 
> not applicable and I had to experiment around.

Sample code is shipped with the libnet source code.
http://www.packetfactory.net/libnet

> Using the tcpdump arguments that you recommended, I was able to see that you 
> were right - the dest hw address was in fact incorrect, and this is 
> undoubtedly the problem.  I was passing it the hw address reported on the 
> destination machine by ifconfig for my tests using LIBNET_LINK; however, some 
> other, unknown hw address was being sent when they were built with 
> LIBNET_RAW4, which was making it to the destination.  Is there a simple 
> function to look up the MAC address, or will I need to build and send the ARP 
> packets myself?  I suppose it's in the samples.

How are you building the ethernet header?  But yeah, there are LINK
examples shipped with the source.

-Aaron

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