One is to send a fake response to the DNS lookup.

其中一种方法是将伪造的响应发送到 DNS 查询。

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There is another case where the reverse DNS lookup is required.

还有另一种情况，其中必须进行反向 DNS 搜索。

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The browser can't download anything from this hostname until the DNS lookup is completed.

浏览器不能下载任何从此主机名直到完成DNS查找。

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