Recently upgraded from 11.1-U7 to latest 11.2-U3.
SSH service wouldn't initiated on startup. Restarting service errors out with:
root: /usr/local/etc/rc.d/openssh: WARNING: failed precmd routine for openssh
Removed "Extra Options" under SSH service settings:
This resolved the issue.
This is a reoccurrance of a bug previous logged during 11.0 pre-release. 25068 was the ID on the previous bug system. Bug tracker link is inactive, but here is the link to the official post:
I believe it would be beneficial to retain this functionality, and even though deprecated ciphers and algorithms may be unsafe for traversal over public internet, it can provide a performance benefit when utilized on internal network infrastructure. With correct hardware and cipher its possible to saturate most networks interfaces. Additionally, replicating/migrating data away from older linux systems (that are no longer maintained) using remote replication is far more convenient than driving over and plugging in a drive.