The machine that returned an openssh-server error and left me with a
partially installed openssh-server package (dpkg IF flag) at the end of
the upgrade process didn't have anything in ssh.socket.d, nor it had a
ssh.socket.d folder in /etc/systemd/system/.

The local machine I tested the upgrade on before trying on my live
server had a file, override.conf, if I remember correctly, in
/etc/systemd/system/ssh.socket.d.

>I have done a jammy->kinetic upgrade using the Machine-1 sshd config that
>you provided, and I do NOT see the errors that were shown in your apt term
>log.

Everything related to systemd was from the 22.04 install. The first and
only time I ever touched anything related to openssh-server systemd
service and socket units was two days ago after the 22.10 upgrade
process returned that openssh-server error.

I'll try to do a 22.04 -> 22.10 upgrade on my local machine later today.

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to openssh in Ubuntu.
https://bugs.launchpad.net/bugs/1993869

Title:
  openssh-server cannot listen or bind to anything other than :::2 after
  upgrading to 22.10 from 22.04

Status in openssh package in Ubuntu:
  Incomplete

Bug description:
  This is a bug report to separate the second issue that was reported in this 
bug report:
  https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1993478

  There's an issue after upgrading to 22.10 from 22.04 that prevents
  opensshd from listening to anything other than :::2. I already
  commented in the bug report I linked, so I'll just copy/paste and add
  some details. I guess.

  The issue is that after upgrading, sshd doesn't use the Listen port or
  ListenAddress config from the sshd_config file or any custom config
  file that was in the sshd_config.d drop in folder anymore.

  Other drop in settings from sshd.config.d seem to be applied normally,
  the issue seem to be only for IP binding and custom ports.

  If I change Accept=no by Accept=yes in ssh.socket and reloads the
  socket unit, I can start sshd on a different port and I can also bind
  the IP to something else than ::

  There's an issue still, an instance of sshd is still listening to
  :::22 that is not started by SSHD but by init.

  root@ubuntulocal:~# netstat -antp
  Active Internet connections (servers and established)
  Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
  tcp 0 0 0.0.0.0:21 0.0.0.0:* LISTEN 568/vsftpd
  tcp 0 0 0.0.0.0:622 0.0.0.0:* LISTEN 571/sshd: /usr/sbin
  tcp 0 272 192.168.1.225:622 192.168.1.220:2473 ESTABLISHED 1027/sshd: root@pts
  tcp6 0 0 :::22 :::* LISTEN 1/init

  If I reboot after changing this no to yes in ssh.socket does not survive a 
reboot and fails to load sshd with a "Failed to queue service startup job" 
error.
  Oct 21 15:41:56 ubuntulocal systemd[1]: ssh.socket: Failed to queue service 
startup job (Maybe the service file is missing or not a template unit?): 
Invalid argument
  Oct 21 15:41:56 ubuntulocal systemd[1]: ssh.socket: Failed with result 
'resources'.

  I had to mask/stop the sshd.socket unit and create a custom sshd
  service in /etc/systemd/system to be able start sshd on a custom port
  and IP.


  chris@ubuntulocal:~$ systemctl status ssh.socket
  ● ssh.socket - OpenBSD Secure Shell server socket
       Loaded: loaded (/lib/systemd/system/ssh.socket; enabled; preset: enabled)
       Active: active (running) since Fri 2022-10-21 23:08:09 UTC; 1min 24s ago
        Until: Fri 2022-10-21 23:08:09 UTC; 1min 24s ago
     Triggers: ● ssh.service
       Listen: [::]:22 (Stream)
        Tasks: 0 (limit: 18899)
       Memory: 4.0K
          CPU: 418us
       CGroup: /system.slice/ssh.socket

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