将IPv6 CIDR解析为Powershell中的第一个地址和最后一个地址

# 输入IPv6 CIDR
$cidr = "2001:db8:abcd::/48"

# 提取IPv6地址和前缀长度
$ipv6Address, $prefixLength = $cidr -split "/"

# 将IPv6地址转换为二进制形式
$binaryAddress = [System.Net.IPAddress]::Parse($ipv6Address).GetAddressBytes() | ForEach-Object { [Convert]::ToString($_, 2).PadLeft(8, '0') }
$binaryAddress = -join $binaryAddress

# 计算网络地址和主机地址的边界
$networkAddress = $binaryAddress.Substring(0, $prefixLength)
$hostAddress = $binaryAddress.Substring($prefixLength)

# 计算第一个地址和最后一个地址
$firstAddress = $networkAddress + "0" * (128 - $prefixLength)
$lastAddress = $networkAddress + "1" * (128 - $prefixLength)

# 将二进制地址转换为IPv6地址
$firstIPv6Address = [System.Net.IPAddress]::Parse("::" + ($firstAddress -split "(?<=\G.{16})", 8) -join ":")
$lastIPv6Address = [System.Net.IPAddress]::Parse("::" + ($lastAddress -split "(?<=\G.{16})", 8) -join ":")

# 输出结果
Write-Host "第一个地址：" $firstIPv6Address.IPAddressToString
Write-Host "最后一个地址：" $lastIPv6Address.IPAddressToString