INTL 3:770/1 3:770/3   
   REPLYADDR bp@www.zefox.net   
   REPLYTO 3:770/3.0 UUCP   
   MSGID:  3fe884ba   
   REPLY:  5d5a9e12   
   PID: SoupGate-Win32 v1.05   
   Richard Kettlewell  wrote:   
   > bob prohaska  writes:   
   >> I'm seeing errors like this on my RasPiOS Pi4 ssh client host:   
   >>   
   >> Connection closed by remote host   
   >> Corrupted MAC on input.   
   >> ssh_dispatch_run_fatal: Connection to 50.1.20.29 port 22:   
   >> message authentication code incorrect   
   >   
   > A message received from the server was corrupted. Off the top of my   
   > head, possible causes include:   
   >   
   > - some fault in the network between the two endpoints   
   > - faulty network device on one endpoint or the other   
   > - faulty RAM on one endpoint or the other   
   > - software bug on end endpoint or the other (unlikely, everyone else   
   >   would be impacted)   
   >   
   >> They show up after a successful ssh login, usually shortly after,   
   >> sometimes never. The connection can be re-started, but the error   
   >> persists even after rebooting the remote host.   
   >>   
   >> It happens with some hosts and not others, I'm trying to figure   
   >> out if it's my RasPiOS workstation or the clients (FreeBSD)   
   >> reporting  the error. The IP number shown is of the remote host,   
   >> but which MAC is being complained about and by whom I can't tell.   
   >   
   > In this context ?MAC? means   
   > https://en.wikipedia.org/wiki/Message_authentication_code, not a network   
   > card?s MAC address.   
      
   Ok, that clears up a profound confusion.   
      
   Thank you very much for writing!   
      
   bob prohaska   
      
   --- SoupGate-Win32 v1.05   
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