Zabbix

...G...PS. [ZBX-18644] removed unnecessary IPv6 code being used in IPv4 builds

Merge in ZBX/zabbix from feature/ZBX-18644-4.0 to release/4.0

* commit 'a0727d3de554f91ded8587323abd5fb2908d6e03':
  ...G...PS. [ZBX-18644] removed unnecessary code from IPv4 version of zbx_ip_cmp() function

(cherry picked from commit 8da34b8b4d0c82d3432b7671bcf800baf9e6e8ef)