[Bug 216847] Re: sshd will not start at boot if ListenAddress is set, because network interface is not yet up

[Gennady]

Ubuntu 17.10
Changing network.target to network-online.target in /lib/systemd/system/ssh.service worked. I also added Wants=network-online.target (don't know if it's necessary but https://www.freedesktop.org/wiki/Software/systemd/NetworkTarget/ suggests it)

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Title:
  sshd will not start at boot if ListenAddress is set, because network
  interface is not yet up

Status in openssh package in Ubuntu:
  Confirmed

Bug description:
  Binary package hint: openssh-server

  The sshd will not start at boot if the ListenAddress option in
  /etc/ssh/sshd_config is set to an IPv4 address other then 0.0.0.0 .

  I am using Ubuntu 7.10 and the version 1:4.6p1-5ubuntu0.2 of the openssh-server package.
  I would expect that sshd is started after boot but it will not and I found this in /var/log/auth.log:

  sshd[4527]: error: Bind to port 22 on 10.1.1.22 failed: Cannot assign requested address.
  sshd[4527]: fatal: Cannot bind any address.

  Once the System is started you can start/stop the sshd with the
  /etc/init.d/ssh script without any problems.

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