AWS Lambda networking over IPv6
Compute Blog
AWS Lambda has introduced support for dual-stack IPv6 networking, offering several key benefits and transition strategies for serverless applications:
- Eliminates need for NAT gateways when Lambda functions require internet connectivity
- Provides cost savings by using free egress-only internet gateways
- Offers improved network efficiency and direct client connections
- Future-proofs architecture for IPv4 address exhaustion
To transition, organizations must:
- Assign IPv6 CIDR block to VPC and subnets
- Update route tables and security groups
- Enable dual-stack networking for Lambda functions
- Consider blue/green deployment for minimal disruption
This transition helps address IPv4 exhaustion while providing immediate operational benefits and long-term network compatibility.
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