[Guy Harris <gharris@xxxxxxxxx>]

Luis Monge wrote:
> Is it possible to create a dummy libpcap file with tethereal?
> I read the manual and I haven't found anything like that,

"Create a file with no packets" is a sufficiently uncommon operation 
that we haven't gone through the effort of adding a feature to do that, 
which is why you didn't find it in the manual. :-)

You could try doing a live capture with a capture filter unlikely to 
match any packets, such as "ip proto 666", and interrupt that capture - 
if it captures no packets, you'll get a capture file with no packets.

Why do you need this file?  There might be a way to get what you need 
without such a file.