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Date:      Mon, 25 Dec 2023 09:45:51 -0800
From:      bob prohaska <fbsd@www.zefox.net>
To:        Joseph Holsten <joseph@josephholsten.com>
Cc:        ticso@cicely.de, Marcin Cieslak <saper@saper.info>, freebsd-arm@freebsd.org
Subject:   Re: USB-serial adapter suggestions needed
Message-ID:  <ZYm/z3O1zoxU0SZB@www.zefox.net>
In-Reply-To: <50011576-256a-4425-9091-7ddcf0c1085b@app.fastmail.com>
References:  <ZYd%2Bmid70Sc1xg//@www.zefox.net> <snq8819p-3q19-o239-7op5-sss807q66082@fncre.vasb> <ZYeDi2H754ZKyJG3@www.zefox.net> <16864054-4os0-pq3p-7qp0-7299666908os@fncre.vasb> <ZYhSYNxHcmR2I/YP@www.zefox.net> <ZYhjzPLUBT74EVau@cicely7.cicely.de> <ZYiI7KuPwabExucl@www.zefox.net> <50011576-256a-4425-9091-7ddcf0c1085b@app.fastmail.com>

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On Sun, Dec 24, 2023 at 01:31:56PM -0800, Joseph Holsten wrote:
> Okay you all, where should all this great info go in the docs?

Probably under the heading of "inexplicable miscellany" 8-)

In the meantime there's been a new development, maybe.

Overnight all four of my ft232 usb-serial sessions dropped their ssh
connections. In addition, one session using pl2303 dropped also, the
two remaining pl2303 sessions remained up.

On trying to reconnect via ssh to the host using the pl2303 adapter,
the first connection worked with a long authentication delay but a
second connection reported

bob@ns2:~ % top
Corrupted MAC on input.
ssh_dispatch_run_fatal: Connection to 50.1.20.30 port 22: message authentication code incorrect
This host is a Pi2v1.1 armv7 running 12.4-STABLE FreeBSD 12.4-STABLE r373269 GENERIC  arm

Re-try was successful, but I've never seen that error message before, does anybody
recognize it?

Three of the four restored ftdi sessions had garbage characters mixed up with the login
prompt, one was clean and the restored pl2303 session was clean.

The two pl2303 sessions that remained connected showed no upset of any kind.

Thanks for reading!

bob prohaska




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