firewall log full of interface lo0 block

[kiokoman]

lately my firewall log is full of blocked traffic from lo0 interface
both haproxy and haproxy-devel are causing it
with Health check method Basic and Transparent ClientIP /Use Client-IP to connect to backend servers and LAN interface on the drop down menu

setting Health check method to Agent

Errors found while starting haproxy
[ALERT] 272/161510 (41883) : parsing [/var/etc/haproxy_test/haproxy.cfg:78] : unknown option 'lb-agent-chk'.
[ALERT] 272/161510 (41883) : Error(s) found in configuration file : /var/etc/haproxy_test/haproxy.cfg
[ALERT] 272/161510 (41883) : Fatal errors found in configuration.

i think lb-agent-chk was removed as an option, it was mentioned here
https://www.haproxy.org/download/1.5/src/snapshot/CHANGELOG-1.5-dev19-20131126