I was get this in my oxwall error log
[Sun Sep 1 14:08:25 2019] [ow_core_log] [Warning] Message: inet_pton(): Unrecognized address 2003:00d9:5f34:7e00: File: /var/www/html/ow_plugins/botsblocker/classes/libs/zbblock/optional/tpbm_zbblock.inc Line:23
I not sure is because the IP is IPV6 or another reason