请问 sing-box 的 route.rules 如何写，可以指定内网的 IP/MAC 地址走到对应的 outbound?

如题。

我这样写并不生效：

```json
"route": {
"rules": [
{
"protocol": "dns",
"action": "hijack-dns"
},
{
"source_ip_cidr": [
"192.168.2.41/32"
],
"outbound": "proxy1"
},
{
"ip_is_private": true,
"outbound": "direct"
},
{
"rule_set": [
"geosite-cn",
"geoip-cn"
],
"outbound": "direct"
}
],
"rule_set": [
...
]
}
```

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