Comment 7 for bug 2008888

Thank you for the additional logs and /sys/class/net files. It confirms that our best course of action on this hardware at the moment is to ignore based on associated driver of the duplicate MACs. I've started work on a quick upstream PR that will land shortly with this support. I've uploaded a package for Ubuntu Lunar that would allow testing if you have access to these modems.

Steps to test:
sudo add-apt-repository ppa:chad.smith/lp-2008888 -y
sudo apt install cloud-init -y
sudo cloud-init clean --logs --reboot
# After reboot
cloud-init status --long (assert no errors)
egrep 'Traceback|WARNING' /var/log/cloud-init.log (assert no warnings/traces)