Apologies for the non-bug. I misread the manual page as a combined result of skimming visually and use of search with a / which is case sensitive. I found the right section after starting at the beginning and reading through in sequence. I would propose the following modification to make searching and skimming easier for sshrc.
/Lars Index: src/usr.bin/ssh/sshd.8 =================================================================== RCS file: /cvs/src/usr.bin/ssh/sshd.8,v retrieving revision 1.291 diff -u -p -u -r1.291 sshd.8 --- src/usr.bin/ssh/sshd.8 24 Jun 2017 06:28:50 -0000 1.291 +++ src/usr.bin/ssh/sshd.8 16 Oct 2017 09:22:12 -0000 @@ -345,12 +345,15 @@ system password database. .El .Sh SSHRC If the file -.Pa ~/.ssh/rc +.Pa /etc/ssh/sshrc exists, .Xr sh 1 runs it after reading the environment files but before starting the user's shell or command. -It must not produce any output on stdout; stderr must be used +Otherwise, if the file +.Pa ~/.ssh/rc +exists, it will be run instead. +Neither may produce any output on stdout; stderr must be used instead. If X11 forwarding is in use, it will receive the "proto cookie" pair in its standard input (and
