[Bug 686607] Re: ssh client should mention ssh-keygen on mismatched keys

[Scott Moser]

The proposed patch can be seen in the branch linked
(lp:~smoser/ubuntu/natty/openssh/lp-686607).

With the change applied, I get a message like:
$ ssh jimbo
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
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 the RSA host key has just been changed.
The fingerprint for the RSA key sent by the remote host is
87:43:dd:3b:da:8f:bd:89:0b:c1:c1:e3:7a:8b:db:4d.
Please contact your system administrator.
Add correct host key in /home/smoser/.ssh/known_hosts.uec to get rid of this message.
Offending key in /home/smoser/.ssh/known_hosts.uec:1
  remove with: ssh-keygen -f "/home/smoser/.ssh/known_hosts.uec" -R jimbo
RSA host key for jimbo has changed and you have requested strict checking.
Host key verification failed.

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https://bugs.launchpad.net/bugs/686607

Title:
  ssh client should mention ssh-keygen on mismatched keys