Windows how to set the route table

[rurirei]

question 1: how to use the command of https://github.com/xjasonlyu/tun2socks/wiki/Examples#windows

how get if <IF NUM> and <primary gateway ip>, and if mertic = 5 would be another value sometimes?

question 2: how to implement a freedom outbound if route table is on ::/0, and how to avoid loop if <server ip> is on dynamic?

question 3: how to implement above with wireguard windows api? here is a try

import (
	"golang.zx2c4.com/wireguard/tun"
	"golang.zx2c4.com/wireguard/windows/tunnel/winipcfg"
)

const(
	private6 = "fdfe:dcba:9876::1/126"
	route6   = "::/0"
	mertic   = 5
)

func setTable(dev tun.Device) error {
	ip6, c6, err := net.ParseCIDR(private6)
	if err != nil {
		return err
	}

	_, r6, err := net.ParseCIDR(route6)
	if err != nil {
		return err
	}

	link := getLink(dev)
	if err := link.AddIPAddress(*c6); err != nil {
		return err
	}
	if err := link.AddRoute(*r6, ip6, metric); err != nil {
		return err
	}

	return nil
}

func getLink(dev tun.Device) winipcfg.LUID {
	return winipcfg.LUID(dev.(*tun.NativeTun).LUID())
}