Wireshark-users: Re: [Wireshark-users] tshark @ linux 64
From: Guy Harris <guy@xxxxxxxxxxxx>
Date: Sat, 18 Apr 2009 10:08:58 -0700

On Apr 17, 2009, at 11:28 PM, Oto BREZINA wrote:

I have run into problem after some of previous update of debian testing
tshark did not work properly. Instead of getting packet information I
get something like "malformated packet". This issue apears only on 64
bit kernel. Everything works properly on 32 bit.

Are you doing a live capture with TShark, or are you reading an existing capture file?

Are you using the exact same TShark binary on the 64-bit kernel and the 32-bit kernel?

Is this bug?

It sounds like a bug in *some* piece of software.

In there package for 64 bit kernel ?

There shouldn't *have* to be - at least for instruction sets where there are both 32-bit and 64-bit variants, most if not all of the 64- bit versions of the Linux kernel should fully support 32-bit userland code.

What happens if, for example, you try capturing the traffic with "tcpdump -i {interface} -s 0 -w {file}" and then read the file with TShark? If that also doesn't work, there might be a bug in the Linux kernel, for example.