OptionalallowAllows IP range input (e.g., 127.0.0.1/24, 2001::/128) if true (IP only). Defaults to false.
OptionalallowAllows wildcard domains (e.g., *.example.com) if true (FQDN only). Defaults to false.
OptionalrequireRequires a Top-Level Domain (TLD) if true (FQDN only). Defaults to true.
OptionalversionIP version to check. 4, 6, "4", or "6". Defaults to undefined (allows both versions).
Options for FQDN or IP address validation.