Comment 2 for bug 1843584

Can you provide the output from: sudo cloud-init collect-logs?

Launching an opensuse-tumbleweed instance on LXD shows that cloud-init does render network-config

tumble1:~ # cat /etc/os-release
NAME="openSUSE Tumbleweed"
# VERSION="20190909"
ID="opensuse-tumbleweed"
ID_LIKE="opensuse suse"
VERSION_ID="20190909"
PRETTY_NAME="openSUSE Tumbleweed"
ANSI_COLOR="0;32"
CPE_NAME="cpe:/o:opensuse:tumbleweed:20190909"
BUG_REPORT_URL="https://bugs.opensuse.org"
HOME_URL="https://www.opensuse.org/"
LOGO="distributor-logo"

tumble1:~ # cat /etc/sysconfig/network/ifcfg-eth0
# Created by cloud-init on instance boot automatically, do not edit.
#
BOOTPROTO=dhcp
DEVICE=eth0
NM_CONTROLLED=no
ONBOOT=yes
STARTMODE=auto
TYPE=Ethernet
USERCTL=no