tcpdump mailing list archives

Re: New DLT_ value request


From: Guy Harris <guy () alum mit edu>
Date: Wed, 19 Dec 2007 17:23:43 -0800


On Dec 18, 2007, at 2:46 AM, Will Barker wrote:

OK - can we go for:

"zero means received, non-zero means sent"

...and 4 bytes long, as per the earlier discussion, or just 1 byte (or 2 bytes)?

Hopefully by "version-specific" you don't mean "specific to the versions of libpcap and Wireshark", but instead mean that one field in the header
would be a version number, so that you won't, for example, have the
information change in such a way that one version of Wireshark can't
read the files from a mismatched version of libpcap.

I was not thinking of producing anything that wasn't backward compatible -
but I agree - there should be no version field - we won't need it.

So what's the format of the packet data in your proprietary encapsulation type?
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