error no VPC found AWS Lambda does not support Elastic IPs without using VPC

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Hi everyone,

I tried to attach an Elastic IP in AWS Lambda. But it shows me error, by saying that no VPC found. Why do we need a VPC for that?

Thank You

Mar 18, 2020 in AWS by akhtar
• 38,180 points
294 views

1 answer to this question.

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Hi@akhtar,

When you run Lambda outside your VPC it's likely running on a shared network out of your control.

When you run it in your VPC, the hosts running the function will attach a network interface provisioned inside your VPC, so you can route the traffic through a NAT gateway with fixed Elastic IPs.

Therefore the functionality of having fixed IPs is not directly implemented by Lambda but a side effect of running it in a VPC subnet routed through a NAT gateway.

Hope this will help.

Thank You

answered Mar 18, 2020 by MD
• 95,140 points

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