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@　　　WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! ヾ(゜∀゜)ノ　　@
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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 the DSA host key has just been changed.
The fingerprint for the DSA key sent by the remote host is
26:6a:a7:b3:4f:ad:a0:b2:8c:e1:d6:ee:72:4e:83:98.
Please contact your system administrator.
Add correct host key in /home/hoge/.ssh/known_hosts to get rid of this message.
Offending key in /home/hoge/.ssh/known_hosts:1
DSA host key for seizen.dyndns.org has changed and you have requested strict checking.
Host key verification failed.



初めて見た。