Wireshark · Wireshark-users: Re: [Wireshark-users] Strangest thing ever !!! Captures only TCP SYN handshake negotiation and not a

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"Large send offload" is disabled.
I have tried to play with several options on this network card but
always got the same results :(

On 5/3/07, Ulf Lamping <ulf.lamping@xxxxxx> wrote:
> > -----Ursprüngliche Nachricht-----
> > Von: Community support list for Wireshark <wireshark-users@xxxxxxxxxxxxx>
> > Gesendet: 03.05.07 14:01:36
> > An: "Community support list for Wireshark" <wireshark-users@xxxxxxxxxxxxx>
> > Betreff: Re: [Wireshark-users] Strangest thing ever !!! Captures only TCP SYN handshake negotiation and not any data ?!?
>
>
> >
> > Jumbo frames?
> >
>
> Maybe, but I would guess that WinPcap can handle (Gigabit Ethernet) jumbo frames.
>
>
> Maybe some kind of offloading work to the network card.
>
> I think I've read about an NDIS (>= V6?) proposal to (optionally) offload the complete TCP/IP work to the network card "hardware". So the Winsock stack won't do a lot more than transferring socket data to the network card. I guess that WinPcap can't handle this, but I've never seen this "in the wild" so I don't know.
>
> What does the Task Offload tab in the interface details display (menu: Capture/Interfaces/Details)?
>
> Maybe there's an option in the network card driver to switch off offloading, you may try to play with the options ...
>
> Regards, ULFL
>
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