Go - Given an IPv4 CIDR, iterate over all IPs

ips_in_cidr.go

package main

import (
	"log"
	"net"
	"github.com/apparentlymart/go-cidr/cidr"
)

func main() {
	_, ipNet, err := net.ParseCIDR("192.168.0.0/24")
	if err != nil {
		log.Fatal(err)
	}

	n := int(cidr.AddressCount(ipNet))

	for i := 0; i < n; i++ {
		ip, err := cidr.Host(ipNet, i)
		if err != nil {
			log.Fatal(err)
		}
		log.Printf("host %d: %v", i, ip)
	}
}