[Bug 1821867] Please test proposed package

[Adam Conrad]

Hello Frank, or anyone else affected,

Accepted netplan.io into cosmic-proposed. The package will build now and
be available at
https://launchpad.net/ubuntu/+source/netplan.io/0.97-0ubuntu1~18.10.1 in
a few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested and change the tag from
verification-needed-cosmic to verification-done-cosmic. If it does not
fix the bug for you, please add a comment stating that, and change the
tag to verification-failed-cosmic. In either case, without details of
your testing we will not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: netplan.io (Ubuntu Bionic)
       Status: Fix Released => Fix Committed

** Tags removed: verification-done-bionic
** Tags added: verification-needed-bionic

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https://bugs.launchpad.net/bugs/1821867

Title:
  network interface is down after post-install reboot of a default disco
  installation

Status in Ubuntu on IBM z Systems:
  Fix Released
Status in netplan.io package in Ubuntu:
  Fix Released
Status in netplan.io source package in Bionic:
  Fix Committed
Status in netplan.io source package in Cosmic:
  Fix Committed
Status in netplan.io source package in Disco:
  Fix Committed

Bug description:
  [Impact]
  Minimal installs using netplan to configure the network.

  [Test case]
  1) Install Ubuntu minimal server / cloud image
  2) Edit /etc/netplan/01-netcfg.yaml to configure the network as necessary.
  3) Run 'sudo netplan apply'. Verify that the network comes up correctly.
  4) Reboot.
  5) Verify that the network comes up properly.

  [Regression potential]
  Minimal; this reverts changes in a package that was never released to -updates, only available as SRU in -proposed and on the devel release. This only changes the systemd config to ensure systemd-networkd.service is included as an active service whenever multi-user.target is wanted (which is the default) instead of only when network-online.target is wanted, since the latter is optional and on some installations is not required at all.  This does not change the ordering of boot at all since in both cases systemd-networkd.service is correctly Before=network.target, and it is Before/After, not Wants/Requires, that determines ordering.

  ---

  After doing a default disco installation on s390x using the beta ISO image aka daily from March 26th and the post-install reboot the system restarts aka reipls (in z/VM in this case) but the interface is not brought up.
  Hence no remote connections are possible.

  The ip cmd shows:
  ip a
  1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group defaul
  t qlen 1000
      link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
      inet 127.0.0.1/8 scope host lo
         valid_lft forever preferred_lft forever
      inet6 ::1/128 scope host
         valid_lft forever preferred_lft forever
  2: enc600: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default ql
  en 1000
      link/ether 02:28:0b:00:00:15 brd ff:ff:ff:ff:ff:ff

  The netplan yaml file looks fine:
  cat /etc/netplan/*.yaml
  # This file describes the network interfaces available on your system
  # For more information, see netplan(5).
  network:
    version: 2
    renderer: networkd
    ethernets:
      enc600:
        addresses: ¬ 10.245.236.27/24 |
        gateway4: 10.245.236.1
        nameservers:
            search: ¬ canonical.com |
            addresses:
                - "10.245.236.1"

  Using ip to bring the interface up doesn't help:
  buntu§hwe0007:ß$ sudo ip link set enc600 up
  sudo ip link set enc600 up
  ubuntu§hwe0007:ß$ ip addr show enc600
  ip addr show enc600
  2: enc600: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP gr
  oup default qlen 1000
      link/ether 02:28:0b:00:00:15 brd ff:ff:ff:ff:ff:ff
      inet6 fe80::28:bff:fe00:15/64 scope link
         valid_lft forever preferred_lft forever
  ubuntu§hwe0007:ß$

  But finally executing netplan apply does help:
  sudo netplan apply --dryrun
  sudo netplan apply --dryrun
  ubuntu§hwe0007:ß$ sudo netplan apply
  sudo netplan apply
  ubuntu§hwe0007:ß$ ip addr show enc600
  ip addr show enc600
  2: enc600: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP gr
  oup default qlen 1000
      link/ether 02:28:0b:00:00:15 brd ff:ff:ff:ff:ff:ff
      inet 10.245.236.27/24 brd 10.245.236.255 scope global enc600
         valid_lft forever preferred_lft forever
      inet6 fe80::28:bff:fe00:15/64 scope link
         valid_lft forever preferred_lft forever
  ubuntu§hwe0007:ß$

  (Sorry for the partly duplicate lines and some strange characters, but
  this is due to the fact that I copied the output from the console that
  requires a 3270 terminal emulation)

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