go get github.com/lab11/go-tuntap/tuntap

import "github.com/lab11/go-tuntap/tuntap"

func main () {
    var tund *tuntap.Interface
    var err error
    var inpkt *tuntap.Packet

    tun_metahdr := false
    tund, err  = tuntap.Open("tun0", tuntap.DevTun, tun_metahdr)
    inpkt, err = tund.ReadPacket()
}