Thank you Gianluca for your answer.
Population of /etc/hosts as a backup with host and ovirt engine ip:
this has already been done.
Fedele
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Fedele, I think you should define better what "misaligned" means in your case, give some details on versions in play, architecture (self hosted vs standalone engine) and provide some logs from the engine and hosts (preferably through a link to a file sharing service if big), so that you can get better help.
Gianluca