You can use this to limit requests on certain interfaces if you are using the server as a router where you only want certain interfaces to support DNS.

如果将该服务器用作路由器，其中您只希望某些接口支持 DNS，则可以使用此选项将请求限制到某些接口上。

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An unscrupulous vendor could issue certificates with DNs that match your internal certificates and connect to your internal-facing channels because SSLPEER only looks at the DN and not who issued it.

不谨慎的供应商可能会颁发带有与您的内部证书匹配的DN的证书，并连接到您的面向内部的通道，这是因为SSLPEER只看dn而不管是谁颁发的。

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If your system has a primary and secondary DNS server, and 4 global DNS servers to test, only the best 4 regional DNS servers will be used in the benchmark.

如果您的系统已有一个首选和备用DNS服务器，要对另外4全球DNS服务器进行测试，则只有最好的4个区域DNS会被用在基准测试里面。

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In fact, security researchers have only a hazy idea of how much DNS-related cybercrime is actually occurring, though researchers at Georgia Tech published a study earlier this year claiming that 0.4% of checkable DNS servers were redirecting users to sites they didn't intend to visit.

FORBES: Magazine Article

Therefore, the companies are recommending that companies only implement the new system for services that provide DNS and HTTP together.

FORBES: Google, OpenDNS And CDNs 'Speedup' The Internet

There are an average of 1500 domain name system (DNS) requests per person every day, but humans typically account for only three requests.

FORBES: Bitsquatting: Machine-Garbled Internet Connections