Re: tcpdump 4.0.0 + libpcap 1.0.0 Released

["Tyson Key" <tyson.key () gmail com>]

Hi, thanks for the tip (it was probably an oversight on my part, since I
didn't know about that limitation).
It seems to work fine now, although I could probably do with automatically
setting the "snaplen" somehow.
Thanks.

On Tue, Oct 28, 2008 at 11:54 PM, Guy Harris <guy () alum mit edu> wrote:

> 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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