基于leaf的Tun2Socks实现，TUN ---> leaf ---> Clash。
{
"log": {
"level": "warn"
},
"inbounds": [
{
"protocol": "tun",
"settings": {
"fd": 5
},
"tag": "tun"
}
],
"outbounds": [
{
"protocol": "socks",
"settings": {
"address": "127.0.0.1",
"port": 7891
},
"tag": "clash"
}
]
}