When I try to add ip to the specific chain fail2ban-client returns entered
ip. Iptables -L shows empty fail2ban chains. I know that fail2ban-server
got that ip, because when I try again, then there is a new entry in the
/var/log/fail2ban.log (ip already exists). The other thing is that there is
no "iptables -A chain" line in the logs. So, how do I fix this? Which file
should I edit?