Comment 17 for bug 1989686

This testing approach across upgrade is referenced in https://cloudinit.readthedocs.io/en/latest/topics/debugging.html#manual-sru-verification-procedure.

I'd expect this last `cloud-init init` run you ran on this instance would have logged that network was not re-written or applied to the system. You'd probably see a log like the following around the time at which you ran `cloud-init init`.

2022-10-05 14:11:20,579 - stages.py[DEBUG]: No network config applied. Neither a new instance nor datasource network update allowed