[Bug 1492546] Re: Systemd runs ifdown on shutdown even when it shouldn't

[Alkis Georgopoulos]

Martin, I'm seeing a regression for this with systemd 228-2ubuntu1 in Ubuntu Xenial.
Now I again have to remove the "ExecStop=/sbin/ifdown %I" stanza in order to get netbooted clients to shut down.

Maybe something else is stopping the ifup service on shutdown now?
I tried to downgrade to the version shipped with Wily, but I was blocked by some dependency issues.

** Changed in: systemd (Ubuntu)
       Status: Fix Released => Triaged

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Title:
  Systemd runs ifdown on shutdown even when it shouldn't

Status in ltsp package in Ubuntu:
  Invalid
Status in systemd package in Ubuntu:
  Triaged
Status in systemd package in Debian:
  Fix Released

Bug description:
  The unit /lib/systemd/system/ifup at .service is Debian and Ubuntu specific, it's not part of upstream systemd.
  On shutdown, it unconditionally ifdowns all interfaces:
    ExecStop=/sbin/ifdown %I

  This is a regression from previous init systems (sysvinit and upstart)
  which cared so that when a network file system was in use, they didn't
  ifdown the interfaces.

  Specifically, both /etc/init.d/networking and /etc/init/networking contain these functions:
    check_network_file_systems()
    check_network_swaps()
  which output the message "not deconfiguring network interfaces: network file systems still mounted" and exit.

  So, please call the same functions in the ExecStop= part of
  ifup at .service.

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