AWS Lambda to access internet via egress-only internet gateway

Question

My lambda code simply do this but always timeout

exports.handler = async function(event, context) {
    const response = await fetch("https://www.google.com/");
    console.log(response); 
    return response;
};

I am trying to find an issue with my configuration to reach the internet. I am trying to setup a simple connection using the egress-only internet gateway. What am I doing wrong?

VPC:

• IPv6 CIDR (Network border group): 2406:da1c:697:400::/56 (ap-southeast-2)
• IPv4 CIDR: 10.4.0.0/16

Private Subnet

• IPv6 CIDR: 2406:da1c:697:42c::/64
• IPv4 CIDR: 10.4.48.0/20

Route table on private subnet

• 10.4.0.0/16 local
• 2406:da1c:697:400::/56 local
• ::/0 eigw-01a19162a848f3cef

ACL Inbound and Outbound

• 100 All traffic All All 0.0.0.0/0 Allow
• 101 All traffic All All ::/0 Allow

Lambda security inbound

• sgr-044f95eff170f631e IPv4 Custom TCP TCP 0 10.4.0.0/16

Lambda security group outbound

• sgr-0e26a5c8ca4cbd3b9 IPv6 All traffic All All ::/0 –
• sgr-078154ed0f052b3ba IPv4 All traffic All All 0.0.0.0/0 –

Answer 1

egress-only internet gateway is for IPv6. For lambda to access internet you need NAT gateway which is for IPv4. From docs:

To give your function access to the internet, route outbound traffic to a NAT gateway in a public subnet. The NAT gateway has a public IP address and can connect to the internet through the VPC's internet gateway.