[ovirt-users] Re: Can't bring upgraded to 4.3 host back to cluster

probably one of the problems that I haven't switched the cluster from iptables to firewalld. But this is just my guess.

When switching to from 4.2.8 to 4.3.3 I did not change one host from iptables to firewalld as well. I was still able to change it later even if the documentation somewhere said iptables support is to be removed in 4.3.