The host you specified (xxx.xxx.xxx.xxx), port 22 matched several
entries in the host key database, but the server's host
key did not match any of the entries. See the
help file for instructions on manually maintaining the
host key database.
It is recommended you verify your host key before accepting.
Server's host key fingerprint (MD5 hash):
9d:6c:02:d4:db:f9:1a:c1:0a:4e:6b:22:db:69:7e:1a

如果是secureCRT报的提示，那么继续向下看，进入secureCRT的Config目录下，删除ip对应的.pub文件，然后就ok了。