Compute a subnet from a ipv4 field; by default emits a into a _subnet field.
Function Traits: FieldComputationFunction, Transformation
| Parameter | Type | Required | Default | Description |
|---|---|---|---|---|
as | string | optional | _subnet | Specifies the name of the output field. |
bits | number | required | Specifies the prefix bits to include in the subnet, e.g. 23. | |
field[a] | string | required | Specifies the input field. | |
The parameter name for field can be omitted; the following forms are equivalent:
logscale
subnet("value")and:
logscale
subnet(field="value")subnet() Examples
Compute subnet for ipAddress using 23bit prefix; emit into subnet field
logscale
subnet(ipAddress, bits=23, as=subnet)