WSL2: Jumbo frames are not forwarded to mirrored interface on Linux

[mgkbeer]

Windows Version

Windows version: 10.0.22621.3007

WSL Version

WSL version: 2.1.0.0

Are you using WSL 1 or WSL 2?

• WSL 2
• WSL 1

Kernel Version

Ubuntu-22.04

Distro Version

Ubuntu-22.04

Other Software

No response

Repro Steps

[wsl2]
networkingMode = mirrored
firewall=true

localhostforwarding = true

Sending Ethernet packets of size 5000 bytes. I see those on Windows but do not see those on Ubuntu's mirrored interface. I do see packets less than 1500 bytes

Expected Behavior

Expected behavior is that I do see all the packets on mirrored interface

Actual Behavior

No packets bigger the 1500 bytes are seen

Diagnostic Logs

No response

[github-actions]

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[chanpreetdhanjal]

Hi. Can you please collect networking logs by following the instructions below?
https://github.com/microsoft/WSL/blob/master/CONTRIBUTING.md#collect-wsl-logs-for-networking-issues