doc: Migrate to new DNS server formats has wrong fake ip example

[AtticusZeller]

Operating system

Linux

System version

ubuntu 24.04

Installation type

Original sing-box Command Line

If you are using a graphical client, please provide the version of the client.

none

Version

sing-box version 1.12.0-alpha.1

Environment: go1.23.5 linux/amd64
Tags: with_gvisor,with_quic,with_dhcp,with_wireguard,with_ech,with_utls,with_reality_server,with_acme,with_clash_api
Revision: 18c443ec41a0a1a76bfdf59dc0a866e3e42a96c2
CGO: disabled

Description

example in docs omitted the 'server`

{
  "dns": [
    {
      "type": "udp",
      "server": "1.1.1.1"
    },
    {
      "type": "fakeip",
      "tag": "fakeip",
      "inet4_range": "198.18.0.0/15",
      "inet6_range": "fc00::/18"
    }
  ],
  "rules": [
    {
      "query_type": ["A", "AAAA"],
      "server": "fakeip"
    }
  ]
}

the following is fixed one:

{
  "dns": {
    "servers": [
      {
        "type": "udp",
        "server": "1.1.1.1"
      },
      {
        "type": "fakeip",
        "tag": "fakeip",
        "inet4_range": "198.18.0.0/15",
        "inet6_range": "fc00::/18"
      }
    ],
    "rules": [
      {
        "query_type": [
          "A",
          "AAAA"
        ],
        "server": "fakeip"
      }
    ]
  }
}

Reproduction

example in docs

Logs

Supporter

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Integrity requirements

• I confirm that I have read the documentation, understand the meaning of all the configuration items I wrote, and did not pile up seemingly useful options or default values.
• I confirm that I have provided the server and client configuration files and process that can be reproduced locally, instead of a complicated client configuration file that has been stripped of sensitive data.
• I confirm that I have provided the simplest configuration that can be used to reproduce the error I reported, instead of depending on remote servers, TUN, graphical interface clients, or other closed-source software.
• I confirm that I have provided the complete configuration files and logs, rather than just providing parts I think are useful out of confidence in my own intelligence.