WSL2 SSH Git Commands Hang During Key Exchange, Partially Improved by Lowering MTU

[Nimafeli]

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Inside WSL2, Git commands that use SSH either become extremely slow or hang when connecting to GitHub. SSH establishes the TCP connection but usually gets stuck during key exchange at expecting SSH2_MSG_KEX_ECDH_REPLY, while HTTPS and Git from Windows PowerShell work normally. Lowering the MTU gave me a partial workaround, but it did not fully solve the issue.

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Foundations

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https://www.theodinproject.com/lessons/foundations-git-basics

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[wise-king-sullyman]

Thanks for taking the time to make this issue, a note for the future, please completely fill out the template including the full title.

[wise-king-sullyman]

Going to tag @zachmmeyer for his WSL2 knowledge to try and replicate.

[zachmmeyer]

I went ahead and regenerated my SSH key for GitHub to see if I could replicate this but I could not.

What is the output from running ssh -T git@github.com in WSL2?