I followed this guide to create a static IP for my Raspberry Pi running Raspbian Jessie. The static IP is running but my router still lists the old IP address for the Raspberry Pi. I also am no longer able to ssh into my Pi; when I try to ssh using the hostname, the ssh connection times out. On the other hand, when I try to ssh to the static IP, I receive the following error:
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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 RSA key sent by the remote host is
<finger print>.
Please contact your system administrator.
Add correct host key in <path to known_hosts file> to get rid of this message.
Offending RSA key in <path to known_hosts file>:21
RSA host key for <raspberry pi static ip> has changed and you have
requested strict checking.
How do I fix this?