Re: pcap_lookupdev() function

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

On Feb 8, 2008, at 11:38 AM, Guillermo Hurtado wrote:

> This is the first time I write to this list. I just read a post  
> about the
> behavior of function pcap_lookupdev().
> Now I wonder: what if I have two or more (2...N) Ethernet NICs  
> installed in
> my computer and I want to retrieve the name of the second NIC to  
> associate
> to a socket and start reading from it?
> Is there a way to achieve this using this function?

No.

In newer versions of libpcap, however, there is, however, a way to  
find all the devices on which you can capture; you use  
pcap_findalldevs().

Choosing the appropriate adapter from the list pcap_findalldevs()  
returns is the job of the application using pcap_findalldevs()  
(because pcap_findalldevs() has no idea which adapter would be  
appropriate, as it doesn't know what criteria to use).
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