The first thing I have done was remove resolvconf cause it was block chattr +i on /etc/resolv.conf But even this not helped. After install on desktop, resolv.conf is generated by NetworkManager (so why chattr not work?) with nameserver 127.0.1.1 I'm not sure where to set default one.
Finally its working!
After install everything is working fine.
And strange fact. Installation process is ignoring somehow