Hi, > Thanks Simon, > Of course we are not sure but we have a strong feeling : > - We tried the restore in loop (14) and all worked fine when firewall is > disabled.- We tried the restore several times but no more 2 succeed > restore at a row when firewall is enabled. > We also tried : > > - - iptables avec nftables en backend > - - firewalld avec nftables en backend > - - nft avec nftables en backend > - but no improvment. > > > We would want to try "iptables with netfilter" this but we have not find > how to switch to. > Do you think server subpackage of NM is a track to follow? Hi, I suggest to try it at least as it's so easy: yum/dnf install NetworkManager-config-server Regards, Simon