diff --git a/packages/@aws-cdk/aws-ec2-alpha/lib/vpc-v2.ts b/packages/@aws-cdk/aws-ec2-alpha/lib/vpc-v2.ts
index f1c9ef45c048b..f43e316572453 100644
--- a/packages/@aws-cdk/aws-ec2-alpha/lib/vpc-v2.ts
+++ b/packages/@aws-cdk/aws-ec2-alpha/lib/vpc-v2.ts
@@ -400,15 +400,7 @@ export class VpcV2 extends VpcV2Base {
             throw new Error('CIDR block should be in the same RFC 1918 range in the VPC');
           }
         }
-
         if (secondaryVpcOptions.ipv4ProvisionedCidrs!) {
-          let isOverlap;
-          for (const provisionedCidr of secondaryVpcOptions.ipv4ProvisionedCidrs) {
-            isOverlap = validateIpv4address(provisionedCidr, secondaryVpcOptions.ipv4CidrBlock);
-          }
-          if (isOverlap === false) {
-            throw new Error('CIDR block should be in the same RFC 1918 range in the VPC');
-          }
           this.ipv4ProvisionedCidrs?.push(...secondaryVpcOptions.ipv4ProvisionedCidrs);
         }
         const cfnVpcCidrBlock = new VPCCidrBlock(this, secondaryVpcOptions.cidrBlockName, {
diff --git a/packages/@aws-cdk/aws-ec2-alpha/test/ipam.test.ts b/packages/@aws-cdk/aws-ec2-alpha/test/ipam.test.ts
index aa3fd7884bccd..59d3ce4820176 100644
--- a/packages/@aws-cdk/aws-ec2-alpha/test/ipam.test.ts
+++ b/packages/@aws-cdk/aws-ec2-alpha/test/ipam.test.ts
@@ -60,7 +60,7 @@ describe('IPAM Test', () => {
     });
 
     new vpc.VpcV2(stack, 'TestVPC', {
-      primaryAddressBlock: vpc.IpAddresses.ipv4('10.2.0.0/16'),
+      primaryAddressBlock: vpc.IpAddresses.ipv4('10.1.0.0/16'),
       secondaryAddressBlocks: [vpc.IpAddresses.ipv4Ipam({
         ipamPool: pool,
         netmaskLength: 20,
diff --git a/packages/@aws-cdk/aws-ec2-alpha/test/subnet-v2.test.ts b/packages/@aws-cdk/aws-ec2-alpha/test/subnet-v2.test.ts
index caf371cc524d4..b43f9be207f74 100644
--- a/packages/@aws-cdk/aws-ec2-alpha/test/subnet-v2.test.ts
+++ b/packages/@aws-cdk/aws-ec2-alpha/test/subnet-v2.test.ts
@@ -207,7 +207,7 @@ describe('Subnet V2 with custom IP and routing', () => {
                     },
         },
         TestVPCD26570D8: { Type: 'AWS::EC2::VPC' },
-        TestVPCipv6Ipam6024F9EC: { Type: 'AWS::EC2::VPCCidrBlock' },
+        TestVPCipv6IpamFF061725: { Type: 'AWS::EC2::VPCCidrBlock' },
         IpamSubnet78671F8A: {
           Type: 'AWS::EC2::Subnet',
           Properties: {
diff --git a/packages/@aws-cdk/aws-ec2-alpha/test/vpc-v2.test.ts b/packages/@aws-cdk/aws-ec2-alpha/test/vpc-v2.test.ts
index 5b2167ae3007b..6c3087ce42a77 100644
--- a/packages/@aws-cdk/aws-ec2-alpha/test/vpc-v2.test.ts
+++ b/packages/@aws-cdk/aws-ec2-alpha/test/vpc-v2.test.ts
@@ -56,7 +56,7 @@ describe('Vpc V2 with full control', () => {
             EnableDnsSupport: true,
           },
         },
-        TestVpcSecondaryAddressD76FCD9C: {
+        TestVpcSecondaryAddress72BC831D: {
           Type: 'AWS::EC2::VPCCidrBlock',
           Properties: {
             VpcId: {
@@ -104,7 +104,7 @@ describe('Vpc V2 with full control', () => {
             EnableDnsSupport: true,
           },
         },
-        TestVpcAmazonProvided569F7097: {
+        TestVpcAmazonProvided00BF109D: {
           Type: 'AWS::EC2::VPCCidrBlock',
           Properties: {
             AmazonProvidedIpv6CidrBlock: true, //Amazon Provided IPv6 address
@@ -235,7 +235,7 @@ describe('Vpc V2 with full control', () => {
             EnableDnsSupport: true,
           },
         },
-        TestVpcIPv6Ipam178145A5: {
+        TestVpcIPv6Ipam402F1C75: {
           Type: 'AWS::EC2::VPCCidrBlock',
           Properties: {
             VpcId: {