Re: tcpdump 4.0.0 + libpcap 1.0.0 Released

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

On Oct 28, 2008, at 2:05 PM, Tyson Key wrote:

> Hi, nice to see a shiny new release of libpcap and tcpdump so soon.
> Out of interest, is the "tcpdump: unsupported data link type  
> USB_LINUX"
> bug/issue resolved when trying to capture USB traffic on a Linux box?

If you mean "if I try to capture USB traffic on a Linux box, and don't  
give the '-w' flag to get it to write the raw traffic to a file, will  
it print 'tcpdump: unsupported data link type USB_LINUX'?", the answer  
is "yes", because nobody's written a USB printer routine for tcpdump,  
so it *can't* handle USB traffic in that case.  If that's the problem  
in question - which is more of a "lack of a feature" than a bug - it's  
still there.

if you mwan "if I try to capture USB traffic on a Linux box, and *do*  
give the '-w' flag to get it to write the raw traffic to a file, will  
it print 'tcpdump: unsupported data link type USB_LINUX'?", the answer  
is "no", because it just dumps the traffic out without interpretation,  
regardless of whether it has a printer for the link-layer type or not,  
and thus can handle USB traffic or any other type of traffic.  If  
that's the problem in question, it's fixed.
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