[Bug 1649931] [NEW] systemd-networkd needs to ensure DNS is up before network-online.target

[Ryan Harper]

Public bug reported:

Currently resolvconf and systemd-networkd don't ensure DNS has been
configured before allowing network-online.target to be reached.

This was discussed in https://launchpad.net/bugs/1636912 however it was
not a regression since there aren't any users of networkd + DNS early in
boot at this time, it was requested that we move this DNS issue to a
separate bug.

** Affects: resolvconf (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: systemd (Ubuntu)
     Importance: Undecided
         Status: New

** Also affects: resolvconf (Ubuntu)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1649931

Title:
  systemd-networkd needs to ensure DNS is up before network-
  online.target

Status in resolvconf package in Ubuntu:
  New
Status in systemd package in Ubuntu:
  New

Bug description:
  Currently resolvconf and systemd-networkd don't ensure DNS has been
  configured before allowing network-online.target to be reached.

  This was discussed in https://launchpad.net/bugs/1636912 however it
  was not a regression since there aren't any users of networkd + DNS
  early in boot at this time, it was requested that we move this DNS
  issue to a separate bug.

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