Meanwhile in a new VPS…

2018-04-18 19:56:42,211 fail2ban.actions [14644]: NOTICE [sshd] 113.131.58.142 already banned
2018-04-18 19:56:43,213 fail2ban.actions [14644]: NOTICE [sshd] 113.131.58.142 already banned
2018-04-18 19:56:44,214 fail2ban.actions [14644]: NOTICE [sshd] 113.131.58.142 already banned
2018-04-18 19:56:45,215 fail2ban.actions [14644]: NOTICE [sshd] 113.131.58.142 already banned
2018-04-18 19:56:46,217 fail2ban.actions [14644]: NOTICE [sshd] 113.131.58.142 already banned
2018-04-18 19:56:47,218 fail2ban.actions [14644]: NOTICE [sshd] 195.72.223.106 already banned
2018-04-18 19:56:48,219 fail2ban.actions [14644]: NOTICE [sshd] 195.72.223.106 already banned

YAH!
Take a look at /etc/fail2ban/jail.local or /etc/fail2ban/jail.d/00-firewalld.conf
banaction = firewallcmd-ipset
or
banaction = iptables-multiport