[Fiware-lab-help] Problem with Ubuntu 12.04

[Angelos Staboulis]

Hi when i am trying to connect to my Ubuntu VM i saw the message below

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 RSA key sent by the remote host is
3f:8d:48:da:c1:c3:99:f5:eb:6d:47:17:93:a8:a0:e3.
Please contact your system administrator.
Add correct host key in /var/root/.ssh/known_hosts to get rid of this
message.
Offending RSA key in /var/root/.ssh/known_hosts:1
RSA host key for 195.220.224.231 has changed and you have requested strict
checking.
Host key verification failed.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.fiware.org/private/fiware-lab-help/attachments/20150814/ce69b271/attachment.html>