Have a CCR 6.32.2 (also happend with 6.29 iirc).
Import a couple DSA SSH keys, (the same ones that used to work elsewhere, like on another CCR with 6.25).

Try to connect through SSH to the CCR: It wont connect.
Try again, it won't even show the "SSH-2.0-ROSSSH" banner.

Now try to do a "/user ssh-keys print": Console session hangs