[Wlug] ssh known_hosts

I'm having a problem with known (or unknown!) hosts since changing the IP address on a server. Server info: Redhat 8.0 ssh -V: OpenSSH_3.4p1, SSH protocols 1.5/2.0, OpenSSL 0x0090602f Client info: Redhat 9 ssh -V: OpenSSH_3.5p1, SSH protocols 1.5/2.0, OpenSSL 0x0090701f When logging into the server, I'm getting the following message: RSA host key for IP address '10.14.36.204' not in list of known hosts. I've played around with ~/.ssh/known_hosts (even renaming it), but I still get the message. Looking at the documentation for the known_hosts file format (in sshd man page), my current known_hosts file, looks quite a bit different (many fields are omitted). Why do I get the message, and how do I get rid of it? TIA, Bill