REMOTE HOST IDENTIFICATION HAS CHANGED! - Serbipunk/notes GitHub Wiki

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@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
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IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that a host key has just been changed.
The fingerprint for the ECDSA key sent by the remote host is
SHA256:CG/G+BK0IGDnm+AHrZvum6Fdn7Pvabq1TCpfDbTT55I.
Please contact your system administrator.
Add correct host key in /home/haoda/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /home/haoda/.ssh/known_hosts:2
  remove with:
  ssh-keygen -f "/home/haoda/.ssh/known_hosts" -R 192.168.0.73
ECDSA host key for 192.168.0.73 has changed and you have requested strict checking.
Host key verification failed.

https://www.digitalocean.com/community/questions/add-correct-host-key-in-root-ssh-known_hosts-to-get-rid-of-this-message

ssh-keygen -R SERVERIPADDRESS