Wireshark-dev: Re: [Wireshark-dev] Changing value of packet during dissection
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From: Guy Harris <guy@xxxxxxxxxxxx>
Date: Sun, 19 Nov 2017 11:27:55 -0800
On Nov 19, 2017, at 7:49 AM, Manik Khandelwal <manik123khandelwal@xxxxxxxxx> wrote:

> I am new to wireshark, I have a genuine question that it possible to change the value of a packet during dissection process. 

If you mean "change the *contents* of the packet", the answer is "no".  That's why all the packet pointers you get from tvbuff calls are const pointers.