No SAN for privatelink address

Hi, in setting up Azure Cache for Redis, I've noticed that the certificate used by the Redis instance is returning a certificate which has a wildcard for the default `*.redis.cache.windows.net` domain and an extra one for `*.geo.redis.cache.windows.net`, however there is not one for the 'default' private link DNS zone `*.privatelink.redis.cache.windows.net`
Is this intended, if so, what's the reasoning behind this?

未识别出任何仓库文件、测试或入口点。首先检查 Azure Cache for Redis private-link 设置返回的证书以及关联的 DNS 配置。确认缺少的 private-link SAN 是否是有意为之，并记录理由或所需的修复，即视为完成。

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