This seems quite likely to be an issue with netplan; I've had a similar
report on UC18; where systemd-networkd isn't started.
Turns out netplan moved the enablement of systemd-netwrokd to network-
online.target; but unfortunately there may be no service or target
depending on that. I'll revert the change to put systemd-networkd back
under multi-user.target.
** Also affects: netplan.io (Ubuntu)
Importance: Undecided
Status: New
** Changed in: netplan.io (Ubuntu)
Status: New => Triaged
** Changed in: netplan.io (Ubuntu)
Importance: Undecided => Critical
** Changed in: netplan.io (Ubuntu)
Assignee: (unassigned) => Mathieu Trudel-Lapierre (cyphermox)
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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:
New
Status in netplan.io package in Ubuntu:
Triaged
Status in systemd 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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