DNS中的“无此名称”是什么意思？

Reckope

因此，我目前正在使用Wireshark来调查DNS流量。在命令提示符下，我运行查询nslookup查找域。在wireshark中，我得到以下响应：

Flags: 0x8183 Standard query response, No such name
    1... .... .... .... = Response: Message is a response
    .000 0... .... .... = Opcode: Standard query (0)
    .... .0.. .... .... = Authoritative: Server is not an authority for domain
    .... ..0. .... .... = Truncated: Message is not truncated
    .... ...1 .... .... = Recursion desired: Do query recursively
    .... .... 1... .... = Recursion available: Server can do recursive queries
    .... .... .0.. .... = Z: reserved (0)
    .... .... ..0. .... = Answer authenticated: Answer/authority portion was not authenticated by the server
    .... .... ...0 .... = Non-authenticated data: Unacceptable
    .... .... .... 0011 = Reply code: No such name (3)

“没有这样的名字”到底是什么意思，为什么要显示？

纽豪斯

查看RFC 1035第4.1.1节中对NXDOMAIN的描述：

https://tools.ietf.org/html/rfc1035#section-4.1.1

            3               Name Error - Meaningful only for
                            responses from an authoritative name
                            server, this code signifies that the
                            domain name referenced in the query does
                            not exist.

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