Wireshark · Wireshark-users: Re: [Wireshark-users] How to set MTU for "Adapter for loopback capture" device?

[Graham Bloice <graham.bloice@xxxxxxxxxxxxx>]

On Wed, 1 Sept 2021 at 17:24, David Aldrich <david.aldrich.ntml@xxxxxxxxx> wrote:

Hi

I am working on Windows and need to capture packets from a test app, using Wireshark, via a loopback device.

I understand that the recommendation is to use the "Adapter for loopback capture" device (\Device\NPF_Loopback). I am doing this and it works fine.

I now need to test very large packets and to see how my dissector handles fragmentation.

How can I set the MTU of the "Adapter for loopback capture" device?

I would think that's a question for the npcap folks.  Maybe not even possible as IIUC it's a pseudo-NIC created by npcap.

 

Best regards
David

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Graham Bloice