After enabling CSF from the Cyberpanel GUI, I noticed the firewallrules for IPv6 didn't work correctly.
Tested on Centos 7.
I had to set IPV6 = "1" in /etc/csf.conf and then restart CSF to enable the IPV6 rules.
Maybe I am missing something, but wouldn't it be better if the script automatically checks for IPV6?
Might be a security risk if someone enables this, thinking everything is fine!