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[Launchpad Bug Tracker <1776958@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package cloud-init - 20.3-15-g6d332e5c-
0ubuntu1

---------------
cloud-init (20.3-15-g6d332e5c-0ubuntu1) groovy; urgency=medium

  * d/cloud-init.postinst: fix the grub install device for NVMe-rooted
    instances on upgrade.  (LP: #1889555)
  * d/cloud-init.templates: add RbxCloud to Choices-C.
  * Add d/clean to fully clean the build artifacts.
  * d/control:
    - Bump Standards-Version to 4.5.0, no changes needed.
    - B-D on debhelper-compat; drop d/compat.
  * Bump the debhelper compat level to 13. Required changes:
    - Stop including the dh systemd plugin.
    - Switch from dh_systemd_start to dh_installsystemd
  * New upstream snapshot.
    - create a shutdown_command method in distro classes (#567)
      [Emmanuel Thomé]
    - user_data: remove unused constant (#566)
    - network: Fix type and respect name when rendering vlan in
      sysconfig. (#541) [Eduardo Otubo] (LP: #1788915, #1826608)
    - Retrieve SSH keys from IMDS first with OVF as a fallback (#509)
      [Thomas Stringer]
    - Add jqueuniet as contributor (#569) [Johann Queuniet]
    - distros: minor typo fix (#562)
    - Bump the integration-requirements versioned dependencies (#565)
      [Paride Legovini]
    - network-config-format-v1: fix typo in nameserver example (#564)
      [Stanislas]
    - Run cloud-init-local.service after the hv_kvp_daemon (#505)
      [Robert Schweikert]
    - Add method type hints for Azure helper (#540) [Johnson Shi]
    - systemd: add Before=shutdown.target when Conflicts=shutdown.target is
      used (#546) [Paride Legovini]
    - LXD: detach network from profile before deleting it (#542)
      [Paride Legovini] (LP: #1776958)
    - redhat spec: add missing BuildRequires (#552) [Paride Legovini]

 -- Chad Smith <chad.smith@xxxxxxxxxxxxx>  Tue, 15 Sep 2020 20:19:10
-0600

** Changed in: cloud-init (Ubuntu)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1776958

Title:
  error creating lxdbr0.

Status in cloud-init:
  Fix Committed
Status in cloud-init package in Ubuntu:
  Fix Released

Bug description:
  $ cat > my.yaml <<EOF
  #cloud-config
  lxd:
    init:
      storage_backend: dir
    bridge:
      mode: new
      name: lxdbr0
      ipv4_address: 10.100.100.1
      ipv4_netmask: 24
      ipv4_dhcp_first: 10.100.100.100
      ipv4_dhcp_last: 10.100.100.200
      ipv4_nat: true
      domain: lxd
  EOF

  $ name=c1
  $ lxc launch ubuntu-daily:cosmic $name "--config=user.user-data=$(cat my.yaml)"
  $ sleep 10
  $ lxc exec $name cat /run/cloud-init/result.json
  {
   "v1": {
    "datasource": "DataSourceNoCloud [seed=/var/lib/cloud/seed/nocloud-net][dsmode=net]",
    "errors": [
     "('lxd', ProcessExecutionError(\"Unexpected error while running command.\\nCommand: ['lxc', 'network', 'create', 'lxdbr0', 'ipv4.address=10.100.100.1/24', 'ipv4.dhcp.ranges=10.100.100.100-10.100.100.200', 'ipv6.address=none', 'dns.domain=lxd', '--force-local']\\nExit code: 1\\nReason: -\\nStdout: \\nStderr: Error: The network already exists\",))"
    ]
   }
  }

  The integration test case tests/cloud_tests/testcases/modules/lxd_bridge.py
  is demonstrates this failure on cosmic.  It currently only occurs on
  cosmic but will occur anywhere with lxd 3.1.0.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.10
  Package: cloud-init 18.2-64-gbbcc5e82-0ubuntu1
  ProcVersionSignature: Ubuntu 4.15.0-22.24-generic 4.15.17
  Uname: Linux 4.15.0-22-generic x86_64
  ApportVersion: 2.20.10-0ubuntu3
  Architecture: amd64
  CloudName: LXD
  Date: Thu Jun 14 18:34:15 2018
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=C.UTF-8
  SourcePackage: cloud-init
  UpgradeStatus: No upgrade log present (probably fresh install)
  cloud-init-log-warnings:
   2018-06-14 18:34:08,417 - util.py[WARNING]: Running module lxd (<module 'cloudinit.config.cc_lxd' from '/usr/lib/python3/dist-packages/cloudinit/config/cc_lxd.py'>) failed
   cloudinit.util.ProcessExecutionError: Unexpected error while running command.
   Stderr: Error: The network already exists

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