Re: pcap_lookupdev returning NULL

[Guy Harris via tcpdump-workers <tcpdump-workers () lists tcpdump org>]

> --- Begin Message ---
>
>
> From: Guy Harris <gharris () sonic net>
>
> Date: Wed, 4 Nov 2020 21:14:47 -0800
>
> What happens if you put
>
>         printf("Version: %s\n", pcap_lib_version());
>
> before the pcap_lookupdev() call?
>
> It won't fix the pcap_lookupdev() call not to return NULL, but it'll indicate what version of libpcap your program is 
> using, which might help determine what the problem is.  Let us know what the "Version:" output is.
>
> --- End Message ---
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