I am in PVE7.3, and the patch is applied and working for me. I need to restart pvestatd as usual to use it correctely.
In my version, the file to modify is /usr/share/perl5/PVE/Storage/ISCSIPlugin.pm on line 68, to add a "return 1;" before the line "return PVE::Network::tcp_ping($server, $port...