Public bug reported:
The reproducer:
create a xenial vm. There, run
lxc launch ubuntu:
leave that container running, and reboot. If you're "lucky", networking
will never come up:
[[0;32m OK [0m] Found device /sys/subsystem/net/devices/lxdbr0.
[[0m[0;31m* [0m] A start job is running for Raise network interfaces (32s /
5min 11s)[K[[0;1;31m*[0m[0;31m* [0m]
A start job is running for Raise network interfaces (33s / 5min
11s)[K[[0;31m*[0;1;31m*[0m[0;31m* [0m] A start job i
s running for Raise network interfaces (34s / 5min 11s)[K[
[0;31m*[0;1;31m*[0m[0;31m* [0m] A start job is running for
Raise network interfaces (34s / 5min 11s)[K[ [0;31m*[0;1;31m*[0m[0;31m* [0m] A
start job is running for Raise network
interfaces (35s / 5min 11s)[K[ [0;31m*[0;1;31m*[0m[0;31m*[0m] A start job is
running for Raise network interfaces (35
s / 5min 11s)[K[ [0;31m*[0;1;31m*[0m] A start job is running for Raise
network interfaces (36s / 5min 11s)[K[ [0
;31m*[0m] A start job is running for Raise network interfaces (37s / 5min
11s)[K[ [0;31m*[0;1;31m*[0m] A start job i
(etc)
I can reproduce this 100% on serverstack (openstack) instances. I
cannot reproduce it locally with uvt-kvm.
What appears to be happening is that lxd starts lxd-bridge which creates
lxdbr0 with no ipv4 address; this racily happens before systemd does
its networking setup; said network setup then sees lxdbr0 and wants to
configure it, so waits for it to have an ip address. Plausible?
** Affects: lxd (Ubuntu)
Importance: Undecided
Status: Confirmed
** Affects: systemd (Ubuntu)
Importance: Undecided
Status: Confirmed
** Also affects: lxd (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1569064
Title:
systemctl wants to configure interfaces it shouldn't (lxdbr0)
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