Increasing log levels in sshd via sshd_config(5)

[Lars Noodén]

Perhaps I have set something incorrectly as I seem to be unable to
increase the log level for sshd(8) by setting it in sshd_config(5)

# /usr/sbin/sshd -T | sort | grep log
logingracetime 120
loglevel DEBUG2
permitrootlogin yes
printlastlog yes
syslogfacility AUTH

# /usr/sbin/sshd -V
OpenSSH_9.9, LibreSSL 4.1.0

# uname -s -r -m
OpenBSD 7.7 arm64

# dmesg | head -n 2
OpenBSD 7.7 (GENERIC.MP) #352: Tue Apr  1 15:07:55 MDT 2025
     deraadt at arm64.openbsd.org:/usr/src/sys/arch/arm64/compile/GENERIC.MP

Instead of more verbose logging in /var/log/authlog, I get the normal
message and nothing more:

Apr  5 11:54:26 server sshd[34135]: Server listening on 0.0.0.0 port 22.
Apr  5 11:54:26 server sshd[34135]: Server listening on :: port 22.

It is the same for logging in:

Apr  5 12:05:13 server sshd-session[18671]: Connection from 192.0.2.75
port 34326 on 192.0.2.35 port 22 rdomain "0"
Apr  5 12:05:21 server sshd-session[18671]: Accepted password for lars
from 192.0.2.75 port 34326 ssh2
Apr  5 12:05:21 server sshd-session[18671]: User child is on pid 79910
Apr  5 12:05:22 server sshd-session[79910]: Starting session: shell on
ttyp2 for lars from 192.0.2.75 port 34326 id 0

If I invoke sshd(8) with one or more -d options, then the output is as
verbose as expected.  The other configuration directives seem to take
effect when applied through sshd_config(5).

What have I missed?

/Lars