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From: "Carlos E. R." <robin_listas@es.invalid>
Newsgroups: comp.os.linux.misc
Subject: Re: Another ssh quirk...
Date: Mon, 5 Oct 2026 15:40:07 +0200
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On 2026-10-05 14:35, Kenny McCormack wrote:
> Yes, I enjoy writing about these weird quirks that I find in the ssh tools
> (including rsync).  I find it amusing that ssh (and friends) - a tool we
> all use daily and rely on heavily - is still stuck, design-wise, in the
> 1980s.
> 
> So, I recently started running a new/different version of RaspiOS on one of
> my Pis.  Same hostname, same hardware, same Mac Address, thus same IP from
> the router, but new OS build.

But different certificate. You should have copied the certificate.

> 
> So, I find that when I ssh into this machine (call it "zebra" for the sake
> of discussion) from each of the other machines on the LAN, the first time,
> it generates a screenful of errors/warnings about "man in the middle"
> attacks and so on.  Yes, I know why it does this and, no, I don't want to
> disable "strict host checking"; I just think there should be a simpler way
> to handle this than the method described below.
> 

There is. It is a single line to paste and execute.
I don't remember it, the error message prints it.


-- 
Cheers,
        Carlos E.R.
        ES🇪🇸, EU🇪🇺.