[Bug 1993478] Re: package openssh-server 1:9.0p1-1ubuntu7 failed to install/upgrade: postinstall script returned 1

[Christophe M.]

Some additional info:

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 at 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 at 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.

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Title:
  package openssh-server 1:9.0p1-1ubuntu7 failed to install/upgrade:
  postinstall script returned 1

Status in openssh package in Ubuntu:
  Triaged

Bug description:
  update failed...

  ProblemType: Package
  DistroRelease: Ubuntu 22.10
  Package: openssh-server 1:9.0p1-1ubuntu7
  ProcVersionSignature: Ubuntu 5.15.0-48.54-generic 5.15.53
  Uname: Linux 5.15.0-48-generic x86_64
  NonfreeKernelModules: cpuid tcp_diag inet_diag tls authenc echainiv esp4 xfrm_user xfrm_algo sctp ip6_udp_tunnel udp_tunnel cfg80211 veth nft_chain_nat xt_REDIRECT nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 xt_tcpudp nft_counter xt_policy nft_compat nf_tables nfnetlink bridge stp llc nls_iso8859_1 hid_generic joydev crct10dif_pclmul crc32_pclmul ghash_clmulni_intel usbhid virtio_net net_failover hid failover i2c_piix4 pata_acpi qemu_fw_cfg floppy sch_fq_codel ipmi_devintf ipmi_msghandler msr ramoops reed_solomon pstore_blk efi_pstore pstore_zone ip_tables x_tables autofs4 btrfs blake2b_generic zstd_compress dm_crypt raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx libcrc32c xor raid6_pq raid1 raid0 multipath linear bochs drm_vram_helper drm_ttm_helper ttm drm_kms_helper syscopyarea aesni_intel sysfillrect sysimgblt input_leds fb_sys_fops cec crypto_simd rc_core psmouse cryptd drm serio_raw virtio_scsi mac_hid
  ApportVersion: 2.23.1-0ubuntu3
  Architecture: amd64
  CasperMD5CheckResult: unknown
  Date: Wed Oct 19 08:41:28 2022
  ErrorMessage: »installiertes post-installation-Skript des Paketes openssh-server«-Unterprozess gab den Fehlerwert 1 zurück
  InstallationDate: Installed on 2019-08-13 (1162 days ago)
  InstallationMedia: Ubuntu-Server 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
  Python3Details: /usr/bin/python3.10, Python 3.10.7, python3-minimal, 3.10.6-1
  PythonDetails: N/A
  RebootRequiredPkgs: Error: path contained symlinks.
  RelatedPackageVersions:
   dpkg 1.21.9ubuntu1
   apt  2.5.3
  SourcePackage: openssh
  Title: package openssh-server 1:9.0p1-1ubuntu7 failed to install/upgrade: »installiertes post-installation-Skript des Paketes openssh-server«-Unterprozess gab den Fehlerwert 1 zurück
  UpgradeStatus: Upgraded to kinetic on 2022-10-19 (0 days ago)

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