2022-07-10 16:41:38 +08:00
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!!! error ""
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2022-07-13 19:01:20 +08:00
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Linux and Windows only
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2022-07-10 16:41:38 +08:00
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### Structure
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```json
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{
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"inbounds": [
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{
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"type": "tun",
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"tag": "tun-in",
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"inet4_address": "172.19.0.1/30",
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"inet6_address": "fdfe:dcba:9876::1/128",
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"mtu": 1500,
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"auto_route": true,
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"hijack_dns": true,
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"sniff": true,
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"sniff_override_destination": false,
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"domain_strategy": "prefer_ipv4"
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}
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]
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}
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```
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### Tun Fields
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#### inet4_address
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==Required==
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IPv4 prefix for the tun interface.
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#### inet6_address
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IPv6 prefix for the tun interface.
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#### mtu
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The maximum transmission unit.
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#### auto_route
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Set the default route to the Tun.
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!!! error ""
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2022-07-15 11:51:51 +08:00
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To avoid traffic loopback, set `route.auto_detect_interface` or `route.default_interface` or `outbound.bind_interface`
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2022-07-10 16:41:38 +08:00
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#### hijack_dns
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Hijack TCP/UDP DNS requests to the built-in DNS adapter.
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### Listen Fields
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#### sniff
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Enable sniffing.
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Reads domain names for routing, supports HTTP TLS for TCP, QUIC for UDP.
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This does not break zero copy, like splice.
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#### sniff_override_destination
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Override the connection destination address with the sniffed domain.
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If the domain name is invalid (like tor), this will not work.
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#### domain_strategy
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One of `prefer_ipv4` `prefer_ipv6` `ipv4_only` `ipv6_only`.
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If set, the requested domain name will be resolved to IP before routing.
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If `sniff_override_destination` is in effect, its value will be taken as a fallback.
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