parse_ipv6_mask()

Learn how to use the parse_ipv6_mask() function to convert IPv6 or IPv4 strings and netmask to a canonical IPv6 string representation.

Converts IPv6/IPv4 string and netmask to a canonical IPv6 string representation.

Syntax

parse_ipv6_mask(ip, prefix)

Parameters

NameTypeRequiredDescription
ipstringThe IPv6/IPv4 network address to convert to canonical IPv6 representation. The value may include net-mask using IP-prefix notation.
prefixintAn integer from 0 to 128 representing the number of most-significant bits that are taken into account.

Returns

If conversion is successful, the result is a string representing a canonical IPv6 network address. If conversion isn’t successful, the result is an empty string.

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)

Output

ip_stringnetmaskip6_canonical
192.168.255.2551200000:0000:0000:0000:0000:ffff:c0a8:ff00
192.168.255.255/241240000:0000:0000:0000:0000:ffff:c0a8:ff00
255.255.255.2551280000:0000:0000:0000:0000:ffff:ffff:ffff
fe80::85d:e82c:9446:7994128fe80:0000:0000:0000:085d:e82c:9446:7994
fe80::85d:e82c:9446:7994/120124fe80:0000:0000:0000:085d:e82c:9446:7900
::192.168.255.2551280000:0000:0000:0000:0000:ffff:c0a8:ffff
::192.168.255.255/241280000:0000:0000:0000:0000:ffff:c0a8:ff00