[Bug 1821867] [NEW] network interface is down after post-install reboot of a default disco installation

[Frank Heimes]

Public bug reported:

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)

** Affects: debian-installer (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: disco s390x

** Attachment added: "logs from /var/log/installer/*"
   https://bugs.launchpad.net/bugs/1821867/+attachment/5249675/+files/inst_log.tgz

** Package changed: systemd (Ubuntu) => debian-installer (Ubuntu)

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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 debian-installer package in Ubuntu:
  New

Bug description:
  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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