I have confirmed this behavior from OpenSSH 6.6 in OS X (from MacPorts) and 6.6 in Ubuntu. I have set up a SSH Certificate authority, and as such I put in the following line at the top of my known_hosts file @cert-authority *.mydomain.com ssh-rsa <public key> Below this are all my hashed entries for various other hosts that I’ve contacted over the years. Every once in a while I’ll rebuild a box in my environment, and the ssh key will change. To clean up my known_hosts file to allow me to re-insert the new entry, I will do ssh-keygen -R <ip>. This has the unintended consequence of matching on the offending entry in the known_hosts file *and* my cert-authority entry: $ ssh-keygen -R 10.50.3.149 # Host 10.50.3.149 found: line 1 type RSA # Host 10.50.3.149 found: line 512 type ECDSA /Users/mlindgren/.ssh/known_hosts updated. Original contents retained as /Users/mlindgren/.ssh/known_hosts.old Am I missing something fundamental here? Thanks, Mattias _______________________________________________ openssh-unix-dev mailing list openssh-unix-dev@xxxxxxxxxxx https://lists.mindrot.org/mailman/listinfo/openssh-unix-dev
