lxc serving DNS

There was an update to lxc - but I'm not aware that this has been reported as a consequence of the update...

What issues are the containers showing?
* can you start them successfully and log in via the console/ssh?
** If not try obtaining debug logs - see https://pve.proxmox.com/pve-docs/chapter-pct.html#_obtaining_debugging_logs
* If yes - are all necessary services for FreeIPA running?
* does the container journal indicate the source of the problem?