IpamPrefixListResolverRuleRequest

Describes a CIDR selection rule to include in a request. This is used when creating or modifying resolver rules.

CIDR selection rules define the business logic for selecting CIDRs from IPAM. If a CIDR matches any of the rules, it will be included. If a rule has multiple conditions, the CIDR has to match every condition of that rule. You can create a prefix list resolver without any CIDR selection rules, but it will generate empty versions (containing no CIDRs) until you add rules.

There are three rule types:

• Static CIDR: A fixed list of CIDRs that do not change (like a manual list replicated across Regions).

• IPAM pool CIDR: CIDRs from specific IPAM pools (like all CIDRs from your IPAM production pool).

• Scope resource CIDR: CIDRs for Amazon Web Services resources like VPCs, subnets, and EIPs within a specific IPAM scope.

Condition availability by resource type:

• Only 2 of the 3 rule types support conditions - IPAM pool CIDR and Scope resource CIDR. Static CIDR rules cannot have conditions.

• Condition available for the IPAM pool CIDR resource type:

• Property:

• IPAM Pool ID

• CIDR (like 10.24.34.0/23)

• Operation: Equals/Not equals

• Value: The value on which to match the condition

• Conditions for the Scope resource CIDR resource type:

• Property:

• Resource ID: The unique ID of a resource (like vpc-1234567890abcdef0)

• Resource type (like VPC or Subnet)

• Resource owner (like 111122223333)

• Resource region (like us-east-1)

• Resource tag (like key: name, value: dev-vpc-1)

• CIDR (like 10.24.34.0/23)

• Operation: Equals/Not equals

• Value: The value on which to match the condition

• When setting conditions for a rule, one or more conditions is required.