Apranik

DNS over UDP ​

A udp DNS server sends each query as one datagram (RFC 1035) and takes the answer that carries the query's ID (RFC 5452). Port 53 by default.

Structure ​

json
{
  "tag": "domestic",
  "type": "udp",
  "settings": { "server": "192.0.2.53", "timeout": "5s" },
  "outbound": "direct"
}

Fields ​

settings.server ​

stringRequired

An IP or hostname with an optional port: "8.8.8.8", "[2001:4860:4860::8888]:53". Give an IP: a hostname needs dns_server to resolve it, and check warns.

settings.timeout ​

durationDefault: 5s

How long one query may take, including reaching the server.

NOTE

The outbound must carry UDP. An answer too large for one datagram is an error; there is no retry over TCP. Use tcp, dot or doh for such servers.

The common fields (tag, outbound, ip_versions, dns_server) are on DNS server.