The disable-occ option in OpenVPN disables the "options consistency check" (OCC), which is useful in configurations that do not use TLS. This option prevents warning messages if option inconsistencies are detected between peers, such as when one peer uses dev tun while the other uses dev tap.
In a server mode setup, if you want to avoid warnings about potential address conflicts, you can use disable-occ to silence these warnings, which might occasionally annoy more experienced users by triggering "false positive" warnings.
However, it's important to note that disabling OCC can lower security or disable features like data-channel offloading. Therefore, it should be used with caution and only when necessary.
