[Bug 1931578] Re: ActivationPolicy=down causes delay at boot

[Launchpad Bug Tracker]

This bug was fixed in the package systemd - 247.3-3ubuntu3.4

---------------
systemd (247.3-3ubuntu3.4) hirsute-security; urgency=medium

  * SECURITY UPDATE: DoS via DHCP FORCERENEW
    - debian/patches/CVE-2020-13529.patch: tentatively ignore FORCERENEW
      command in src/libsystemd-network/sd-dhcp-client.c.
    - CVE-2020-13529
  * SECURITY UPDATE: denial of service via stack exhaustion
    - debian/patches/CVE-2021-33910.patch: do not use strdupa() on a path
      in src/basic/unit-name.c.
    - CVE-2021-33910

 -- Marc Deslauriers <marc.deslauriers at ubuntu.com>  Tue, 20 Jul 2021
07:38:18 -0400

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https://bugs.launchpad.net/bugs/1931578

Title:
  ActivationPolicy=down causes delay at boot

Status in systemd package in Ubuntu:
  Fix Released
Status in systemd source package in Bionic:
  Won't Fix
Status in systemd source package in Focal:
  Fix Released
Status in systemd source package in Groovy:
  Fix Released
Status in systemd source package in Hirsute:
  Fix Released
Status in systemd source package in Impish:
  Fix Released

Bug description:
  [impact]

  The ActivationPolicy= parameter was backported in bug 1664844, but
  when this is set to down (or always-down or manual) without also
  specifying RequiredForOnline=no, then there is a hang at boot waiting
  for the network to finish coming online.

  [test case]

  With the latest systemd, which includes support for ActivationPolicy=,
  configure an interface with ActivationPolicy=down and reboot. The boot
  will be delayed waiting for that interface.

  [regression potential]

  any regression would likely cause the system to encounter delay at
  boot, or to boot before configured interface(s) are fully online at
  boot, or to fail to correctly/fully configure interface(s).

  [scope]

  this is needed for all releases

  this is proposed upstream in:
  https://github.com/systemd/systemd/pull/19883

  [other info]

  this is only needed for convenience, as any configuration using
  ActivationPolicy=down can also easily add RequiredForOnline=no

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