Re: sshd signal 11 on -current

From: Paul Mather <paul_at_gromit.dlib.vt.edu>
Date: Thu, 18 Jan 2024 14:45:51 UTC 
On 17 Jan 2024, at 8:51 pm, bob prohaska <fbsd@www.zefox.net> wrote:

> On Wed, Jan 17, 2024 at 05:09:32PM -0800, Mark Millard wrote:
>> 
>> So far it sounds like the problem requires pi4 RasPiOS
>> workstation behavior to be involved to get the problem.
>> Can you do something to avoid all use of RasPiOS, possibly
>> using a different OS on that RPi4B for some experiments?
>> 
> I just tried a Windows 10 laptop wired into the LAN. Ssh to 
> ns2.zefox.net and  running 
> grep -i /var/log/messages produces five lines of grep matches, 
> then "corrupted MAC on input....." 
> 
> I'm not sure which MAC (as in ethernet MAC) is being referred
> to. Might a different kind of MAC exist, unrelated to ethernet?


If this error is from SSH then it is likely unrelated to Ethernet.  It likely refers to Message Authentication Code (MAC), which is used to ensure data integrity.  See man ssh_config(5) for details.

Cheers,

Paul.