2.4 KiB
!!! error ""
Only supported on Linux, Windows and macOS.
Structure
{
"inbounds": [
{
"type": "tun",
"tag": "tun-in",
"interface_name": "tun0",
"inet4_address": "172.19.0.1/30",
"inet6_address": "fdfe:dcba:9876::1/128",
"mtu": 1500,
"auto_route": true,
"endpoint_independent_nat": false,
"udp_timeout": 300,
"stack": "gvisor",
"sniff": true,
"sniff_override_destination": false,
"domain_strategy": "prefer_ipv4"
}
]
}
!!! warning ""
If tun is running in non-privileged mode, the address and MTU will not be configured automatically, please make sure the settings are accurate.
Tun Fields
interface_name
Virtual device name, automatically selected if empty.
inet4_address
==Required==
IPv4 prefix for the tun interface.
inet6_address
IPv6 prefix for the tun interface.
mtu
The maximum transmission unit.
auto_route
Set the default route to the Tun.
!!! error ""
To avoid traffic loopback, set `route.auto_detect_interface` or `route.default_interface` or `outbound.bind_interface`
endpoint_independent_nat
Enable endpoint-independent NAT.
Performance may degrade slightly, so it is not recommended to enable on when it is not needed.
udp_timeout
UDP NAT expiration time in seconds, default is 300 (5 minutes).
stack
TCP/IP stack.
| Stack | Upstream | Status |
|---|---|---|
| gVisor (default) | google/gvisor | recommended |
| LWIP | eycorsican/go-tun2socks | upstream archived |
!!! warning ""
The LWIP stack is not included by default, see [Installation](/#Installation).
Listen Fields
sniff
Enable sniffing.
See Sniff for details.
sniff_override_destination
Override the connection destination address with the sniffed domain.
If the domain name is invalid (like tor), this will not work.
domain_strategy
One of prefer_ipv4 prefer_ipv6 ipv4_only ipv6_only.
If set, the requested domain name will be resolved to IP before routing.
If sniff_override_destination is in effect, its value will be taken as a fallback.