To serve IPv6-native mobile clients, an organization created an IPv6-only web site. Front-end instances are launched in an Amazon VPC with an assigned IPv6 CIDR. The IPv4 CIDR of the VPC is completely used. Each of the two Availability Zones has a single subnet with correctly configured IPv6 CIDR associations. Auto Scaling is set correctly, and there is no usage of Elastic Load Balancing.
Customers report that the service is inaccessible at times of high demand. When the network engineer tries to manually launch an instance, he gets the following message: 'There are insufficient available addresses in subnet'subnet-12345678' to support the desired number of instances.'
What step will remedy the issue of availability?
A. Create a new subnet using a VPC secondary IPv6 CIDR, and associate an IPv6 CIDR. Include the new subnet in the Auto Scaling group.
B. Create a new subnet using a VPC secondary IPv4 CIDR, and associate an IPv6 CIDR. Include the new subnet in the Auto Scaling group.
C. Resize the IPv6 CIDR on each of the existing subnets. Modify the Auto Scaling group maximum number of instances.
D. Add a secondary IPv4 CIDR to the Amazon VPC. Assign secondary IPv4 address space to each of the existing subnets.
To serve IPv6-native mobile clients, an organization created an IPv6-only web site. Front-end instances are launched in
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To serve IPv6-native mobile clients, an organization created an IPv6-only web site. Front-end instances are launched in
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