### Structure ```json { "detour": "upstream-out", "bind_interface": "en0", "inet4_bind_address": "0.0.0.0", "inet6_bind_address": "::", "routing_mark": 1234, "reuse_addr": false, "connect_timeout": "5s", "tcp_fast_open": false, "tcp_multi_path": false, "udp_fragment": false, "domain_strategy": "prefer_ipv6", "fallback_delay": "300ms" } ``` ### Fields | Field | Available Context | |------------------------------------------------------------------------------------------------------------------------------------------|-------------------| | `bind_interface` /`*bind_address` /`routing_mark` /`reuse_addr` / `tcp_fast_open` / `tcp_multi_path` / `udp_fragment` /`connect_timeout` | `detour` not set | #### detour The tag of the upstream outbound. #### bind_interface The network interface to bind to. #### inet4_bind_address The IPv4 address to bind to. #### inet6_bind_address The IPv6 address to bind to. #### routing_mark !!! quote "" Only supported on Linux. Set netfilter routing mark. #### reuse_addr Reuse listener address. #### tcp_fast_open Enable TCP Fast Open. #### tcp_multi_path !!! warning "" Go 1.21 required. Enable TCP Multi Path. #### udp_fragment Enable UDP fragmentation. #### connect_timeout Connect timeout, in golang's Duration format. A duration string is a possibly signed sequence of decimal numbers, each with optional fraction and a unit suffix, such as "300ms", "-1.5h" or "2h45m". Valid time units are "ns", "us" (or "µs"), "ms", "s", "m", "h". #### domain_strategy One of `prefer_ipv4` `prefer_ipv6` `ipv4_only` `ipv6_only`. If set, the requested domain name will be resolved to IP before connect. | Outbound | Effected domains | Fallback Value | |----------|--------------------------|-------------------------------------------| | `direct` | Domain in request | Take `inbound.domain_strategy` if not set | | others | Domain in server address | / | #### fallback_delay The length of time to wait before spawning a RFC 6555 Fast Fallback connection. That is, is the amount of time to wait for connection to succeed before assuming that IPv4/IPv6 is misconfigured and falling back to other type of addresses. If zero, a default delay of 300ms is used. Only take effect when `domain_strategy` is set.