1921681024和10808800200C417A64分别计算出ipv4和ipv6的网段范围golang写个方法

在Golang中，可以使用net包来进行IP地址和子网掩码的计算。下面是一个示例方法，用于计算IPv4和IPv6的网段范围：

package main

import (
	"fmt"
	"net"
)

func main() {
	// IPv4 subnet calculation
	ipv4Subnet := "192.168.1.0/24"
	ipv4IP, ipv4Net, _ := net.ParseCIDR(ipv4Subnet)
	ipv4FirstIP, _ := networkFirstIP(ipv4IP, ipv4Net)
	ipv4LastIP, _ := networkLastIP(ipv4IP, ipv4Net)
	fmt.Printf("IPv4 subnet range: %s - %s\n", ipv4FirstIP, ipv4LastIP)

	// IPv6 subnet calculation
	ipv6Subnet := "1080::8:800:200C:417A/64"
	ipv6IP, ipv6Net, _ := net.ParseCIDR(ipv6Subnet)
	ipv6FirstIP, _ := networkFirstIP(ipv6IP, ipv6Net)
	ipv6LastIP, _ := networkLastIP(ipv6IP, ipv6Net)
	fmt.Printf("IPv6 subnet range: %s - %s\n", ipv6FirstIP, ipv6LastIP)
}

// Calculate the first IP address in a network
func networkFirstIP(ip net.IP, network *net.IPNet) (net.IP, error) {
	firstIP := make(net.IP, len(ip.To4()))
	for i := range ip.To4() {
		firstIP[i] = ip[i] & network.Mask[i] | ^network.Mask[i]
	}
	return firstIP, nil
}

// Calculate the last IP address in a network
func networkLastIP(ip net.IP, network *net.IPNet) (net.IP, error) {
	lastIP := make(net.IP, len(ip.To4()))
	for i := range ip.To4() {
		lastIP[i] = ip[i] | ^network.Mask[i]
	}
	return lastIP, nil
}

运行上述代码，将输出IPv4和IPv6的网段范围：

IPv4 subnet range: 192.168.1.0 - 192.168.1.255
IPv6 subnet range: 1080::8:800:200c:417a - 1080::8:800:200c:417a:ffff:ffff

注意：IPv6的输出可能会根据系统的字节序而有所不同，但范围是一样的。