Comment 2 for bug 1549473

Please can you provide as much information as you have? For example, "the ctl status is failed 255" is clearly a paraphrase of something that you're seeing; it would be more useful if you could please copy and paste the original text of the error messages.

Forum research is probably leading you up entirely the wrong path; that sounds like information that predates systemd. The ssh.service unit has "After=network.target".

"journalctl -u sshd" won't find anything because that's not what the unit is called. Try "journalctl -u ssh".