使用一个命令获取IPv4和IPv6 [英] Get IPv4 and IPv6 with one command

问题描述

我想知道是否仅通过一次命令挖掘就能获得IPv4和IPv6地址，以及如何?

例如: 挖主机名A -上面的命令将给出IPv4

挖掘主机名AAAA -这个命令会给我IPv6地址

我如何仅用一个命令就可以同时获得ipv4和IPv6地址?

我陷入了这个问题，如何仅通过一个命令就可以通过独裁查询获得IPv4和IPv6?

任何人都可以帮助我吗?

解决方案

如果要查询域的权威服务器，则可以通过ANY查询获取名称的所有记录:

dig hostname ANY @servername

但是，如果您正在查询缓存服务器，这将无法可靠地工作.当缓存服务器响应ANY查询时，它将返回当时恰好在缓存中的所有记录.如果名称同时具有A和AAAA记录，但是服务器最近只查找了A记录，则AAAA记录将不在缓存中，因此不会返回它们./p>

此外，有人提议允许DNS服务器拒绝回答ANY查询: 解决方案

If you're querying an authoritative server for the domain, you can get all the records for a name with an ANY query:

dig hostname ANY @servername

However, this won't work reliably if you're querying a caching server. When a caching server responds to an ANY query, it returns whatever records happen to be in cache at the time. If the name has both A and AAAA records, but the server has only looked up the A records recently, the AAAA records won't be in the cache, so it won't return them.

Furthermore, there is a proposal to allow DNS servers to refuse to answer ANY queries: Providing Minimal-Sized Responses to DNS Queries that have QTYPE=ANY. If you query a server that implements this, you may not be able to get both responses with a single query (although one of the suggestions in that draft is that an ANY query might just return all MX, A, and AAAA, since this is often what clients want). So for best reliability, you should just make two queries.

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