Defined in github.com/aws/aws-sdk-go/service/ec2/api.go
[EC2-VPC] The primary IP address. You must specify a value from the IP address range of the subnet.
Only one private IP address can be designated as primary. Therefore, you can't specify this parameter if PrivateIpAddresses.n.Primary is set to true and PrivateIpAddresses.n.PrivateIpAddress is set to an IP address.
Default: We select an IP address from the IP address range of the subnet.