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Date:      Thu, 17 Jul 2025 13:21:58 +0200
From:      Gordon Bergling <gbe@FreeBSD.org>
To:        net@freebsd.org
Subject:   SSH connection problem to two FreeBSD VMs externaly hosted
Message-ID:  <aHjc1rxFp7M3zmnT@GB-MBA.local>

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[-- Attachment #1 --]
Hi,

I have two FreeBSD externaly hosted, one at Hetzner and one on Azure.

Both systems running latest 14.3-RELEASE, but I can't no long connect to them,
wether from a local 14.2-RELEASE, or the latest macOS. Nothing has changed in
terms of configuration. All systems use public-key authentication. The error
I am getting is the following:

sshd[10965]: error: Fssh_kex_input_kexinit: unknown kex type 10 [preauth]

Has anyone an idea whould could cause this?

Seeking out in forums about trying different KexAlgorithms options didn't
solved the problem.

Any help is much appreciated!

--Gordon

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