'No such name' DNS 中的含义是什么？

Question

所以我目前使用Wireshark来调查DNS流量。在命令提示符中，我正在运行查询nslookup来查找域。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)

"No such name"到底是什么意思，为什么要显示它?

Answer 1

查看RFC 1035 section 4.1.1中NXDOMAIN的描述:

https://www.rfc-editor.org/rfc/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.