package main

import (
	"encoding/binary"
	"net"
)

func int2ip(nn uint32) net.IP {
	ip := make(net.IP, 4)
	binary.BigEndian.PutUint32(ip, nn)
	return ip
}

func u32tob(u uint32) []byte {
	buf := make([]byte, 4)
	binary.BigEndian.PutUint32(buf, u)
	return buf
}