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feat: add skipDefaultNatRoute option to subnet groups #34

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Merged
mr-robot-in merged 1 commit into from
Oct 27, 2026
Merged

feat: add skipDefaultNatRoute option to subnet groups #34

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14 changes: 14 additions & 0 deletions API.md
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11 changes: 10 additions & 1 deletion src/constructs/network.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -70,6 +70,15 @@ export interface ISubnetsProps {
readonly routeTableStringFormat?: boolean;
readonly tags?: Record<string, string>;
readonly useSubnetForNAT?: boolean;
/**
* Do not add the automatic default route (0.0.0.0/0) to the same-AZ NAT gateway
* for the private subnets of this group. Declare your own 0.0.0.0/0 route in
* `routes` (e.g. RouterType.NAT_GATEWAY with a routerId) to pin egress to a
* specific NAT gateway.
*
* @default false
*/
readonly skipDefaultNatRoute?: boolean;
readonly useNestedStacks?: boolean;
}
export interface VPCProps {
Expand Down Expand Up @@ -157,7 +166,7 @@ export class Network extends Construct {
subnet.forEach((sb) => {
if (sb instanceof ec2.PublicSubnet) {
this.pbSubnets.push(sb);
} else if (sb instanceof ec2.PrivateSubnet) {
} else if (sb instanceof ec2.PrivateSubnet && !subnetProps.skipDefaultNatRoute) {
this.pvSubnets.push(sb);
}
if (
Expand Down
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