parse_ipv6_mask()parse_ipv6_mask()

• 08/18/2020
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将 IPv6/IPv4 字符串和网络掩码转换为规范的 IPv6 字符串表示形式。Converts IPv6/IPv4 string and netmask to a canonical IPv6 string representation.

parse_ipv6_mask("127.0.0.1", 24) == '0000:0000:0000:0000:0000:ffff:7f00:0000'
parse_ipv6_mask(":fe80::85d:e82c:9446:7994", 120) == 'fe80:0000:0000:0000:085d:e82c:9446:7900'

语法Syntax

parse_ipv6_mask(Expr, PrefixMask)

参数Arguments

• Expr ：表示将转换为规范 IPv6 表示形式的 IPv6/IPv4 网络地址的字符串表达式。Expr: String expression representing IPv6/IPv4 network address that will be converted to canonical IPv6 representation. 字符串可以包含使用 IP 前缀表示法的网络掩码。String may include net-mask using IP-prefix notation.
• PrefixMask ：从 0 到 128 的整数，表示所考虑的最高有效位数。PrefixMask: An integer from 0 to 128 representing the number of most-significant bits that are taken into account.

IP 前缀表示法IP-prefix notation

IP 地址可以通过斜杠 (/) 字符使用 IP-prefix notation 定义。IP addresses can be defined with IP-prefix notation using a slash (/) character. 斜杠 (/) 左边的 IP 地址是基本 IP 地址。The IP address to the LEFT of the slash (/) is the base IP address. 斜杠 (/) 右边的数字（1 到 127）是网络掩码中连续 1 位的数目。The number (1 to 127) to the RIGHT of the slash (/) is the number of contiguous 1 bit in the netmask.

返回Returns

如果转换成功，则结果将是表示规范 IPv6 网络地址的字符串。If conversion is successful, the result will be a string representing a canonical IPv6 network address. 如果转换未成功，结果将为 null。If conversion isn't successful, the result will be null.

示例Example

datatable(ip_string:string, netmask:long)
[
 // IPv4 addresses
 '192.168.255.255',     120,  // 120-bit netmask is used
 '192.168.255.255/24',  124,  // 120-bit netmask is used, as IPv4 address doesn't use upper 8 bits
 '255.255.255.255', 128,  // 128-bit netmask is used
 // IPv6 addresses
 'fe80::85d:e82c:9446:7994', 128,     // 128-bit netmask is used
 'fe80::85d:e82c:9446:7994/120', 124, // 120-bit netmask is used
 // IPv6 with IPv4 notation
 '::192.168.255.255',    128,  // 128-bit netmask is used
 '::192.168.255.255/24', 128,  // 120-bit netmask is used, as IPv4 address doesn't use upper 8 bits
]
| extend ip6_canonical = parse_ipv6_mask(ip_string, netmask)