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Hermes SMTP Server) with ESMTPA ID af296f11fa6e0e069b65358525de277d; Sat, 28 Oct 2023 23:12:06 +0000 (UTC) Content-Type: text/plain; charset=us-ascii List-Id: Porting FreeBSD to ARM processors List-Archive: https://lists.freebsd.org/archives/freebsd-arm List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-arm@freebsd.org Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3774.200.91.1.1\)) Subject: Re: Stable/14 dropping ssh connections to FT232 usb-serial adapter From: Mark Millard In-Reply-To: Date: Sat, 28 Oct 2023 16:11:53 -0700 Cc: freebsd-arm@freebsd.org Content-Transfer-Encoding: quoted-printable Message-Id: <5210D449-A4E6-455B-A1BB-754BA3501C3F@yahoo.com> References: <33D1AACD-62FB-444A-868C-B8DE92A7BF50@yahoo.com> To: bob prohaska X-Mailer: Apple Mail (2.3774.200.91.1.1) X-Spamd-Bar: ---- X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:36647, ipnet:98.137.64.0/20, country:US] X-Rspamd-Queue-Id: 4SHwKS1Tj7z3KTj So, if I understand correctly, the general structure here is something = like: RPi4B: ssh to RPi2 v1.1 #0 (to invent simple naming). . . . RPi2 v1.1 #0: tip ucom (which gets to RPi2 v1.1 #1) . . . (Does each RPi2 v1.1 get its own ssh session too? If yes: all from the = same RPi4B?) RPi2 v1.1 #1: tip ucom (which gets to RPi2 v1.1 #2) . . . (ssh session to RPi2 v1.1 #N ?) RPi2 v1.1 #N: tip ucom (which gets to RPi2 v1.1 #0) (An accurate/complete indication of the sessions/connections command sequence for the set up could be useful.) As I understand, you are seeing the ssh session abort, not just a tip session abort. An interesting test might be having another ssh session paired with each one that does a remote tip --but that is not used for any tip or other activity beyond sitting at a shell prompt. The question for each paired ssh session would be: A) Do both ssh sessions of the pair fail/abort at the same time? B) Does only one? If yes: is it always just the one that had used tip? So, a comparison/contrast test. As I remember, there were notes about avoiding special character sequences from getting special interpretations for ssh. That sort of thing could be important to both ssh [-e none] and tip [-n] for testing if that avoids some problems. I've no clue if "tip -n -v" might report anything interesting around a failure (via the -v). =3D=3D=3D Mark Millard marklmi at yahoo.com