gopacket ubuntu16.04错误未定义：pcapErrorNotActivated

Question

root@ubuntu:~/processNet/processNet# go run testversion.go

github.com/google/gopacket/pcap

/home/go/src/github.com/google/gopacket/pcap/pcap.go:30:22: undefined: pcapErrorNotActivated /home/go/src/github.com/google/gopacket/pcap/pcap.go:52:17: undefined: pcapTPtr /home/go/src/github.com/google/gopacket/pcap/pcap.go:64:10: undefined: pcapPkthdr

import (
        "fmt"

        "github.com/google/gopacket/pcap"
)

func main() {
        fmt.Println(pcap.Version())
}```

Already installed libpcap and c test available