lookup_ip.go

package main

import (
    "fmt"
    "net"
    "os"
)

func main() {
    name, err := os.Hostname()
    if err != nil {
        fmt.Printf("Oops: %v\n", err)
        return
    }

    addrs, err := net.LookupHost(name)
        if err != nil {
            fmt.Printf("Oops: %v\n", err)
        return
    }

    for _, a := range addrs {
        fmt.Println(a)
    }
}