> ... would you mind to test a new incarnation of ssh-user-config which I > plan to use in a bugfix-release of OpenSSH 6.7p1 and to push upstream. :}
Test completed, it worked fine in my environment (although the file did need a d2u prior to running). I generated all three primary keys and they seemed to work properly once generated. I confirm that I did not have a /etc/passwd file in place at all during the run.