[Joerg Mayer <jmayer@xxxxxxxxx>]

On Sun, Mar 09, 2003 at 10:16:37AM -0800, Mike Benham wrote:
> -i  Set the name of the network interface or pipe to use for live
>     packet capture.  Network interface names should match one of the
>     names listed in "netstat -i" or "ifconfig -a".  Pipe names should
>     be either the name of a FIFO (named pipe) or ``-'' to read data
>     from the standard input. Data read from pipes must be in libpcap
>     format.

You are right.  I just did the following test:

mknod /tmp/.testpipe p
(a single user machine, so I didn't have to worry about permissions)
sudo tcpdump -i ppp0 -w /tmp/.testpipe
tethereal -i /tmp/.testpipe

and it worked. Does it work for you?

 Ciao
         Jörg
--
Joerg Mayer                                            <jmayer@xxxxxxxxx>
We are stuck with technology when what we really want ist just stuff that
works. Some say that should read Microsoft instead of technology.