[Bug 1777094] Re: dnsmasq started too early, not getting all interfaces

[Terrence Houlahan]

The problem lives in the [Unit] section in the After= directive which
when modified as follows raises dnsmasq.service unbroken on boot:

sed -i 's/After=network.target/After=NetworkManager-wait-
online.service/' /etc/systemd/system/multi-
user.target.wants/dnsmasq.service

That's a fairly tidy, and *reproducible* fix which works on successive
reboots.


** Changed in: dnsmasq (Ubuntu)
       Status: Expired => Confirmed

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https://bugs.launchpad.net/bugs/1777094

Title:
  dnsmasq started too early, not getting all interfaces

Status in dnsmasq package in Ubuntu:
  Confirmed
Status in netplan.io package in Ubuntu:
  Expired

Bug description:
  Hi,

  I'm still struggling with 18.04 and the move from ifupdown to netplan.

  I am running a local virtual linux bridge as a network for several
  virtual machines and containers, which is to be serviced with dhcp and
  dns by dnsmasq.

  Conforming to latest designs from Ubuntu the bridge is now started by
  netplan and configured in /etc/netplan/60-vlan0.yaml straightforward.

  Since there is no ifupdown-scripts anymore, I've configured the
  default dnsmasq daemon in /etc/dnsmasq.d/vlan0 to offer dhcp for that
  bridge.

  
  This works only when started manually. 

  When booting ubuntu the normal way, the bridge is correctly generated,
  and dnsmasq is running, but it does *not* offer DNS for the bridge and
  does not occupy its port 53. But just a manual systemctl restart
  dnsmasq.service make it run as expected, then everything is fine.

  So my guess is that my configuration is correct, but dnsmasq simply
  started to early, i.e. before the bridge is created, and thus does not
  see the bridge when starting up.

  There's something wrong in the dependencies of the startup
  configuration.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: dnsmasq 2.79-1
  ProcVersionSignature: Ubuntu 4.15.0-23.25-generic 4.15.18
  Uname: Linux 4.15.0-23-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.9-0ubuntu7.2
  Architecture: amd64
  CurrentDesktop: LXDE
  Date: Fri Jun 15 10:59:43 2018
  InstallationDate: Installed on 2018-04-30 (45 days ago)
  InstallationMedia: Lubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
  PackageArchitecture: all
  SourcePackage: dnsmasq
  UpgradeStatus: No upgrade log present (probably fresh install)

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