private Dns Name Options On Launch
The hostname type for EC2 instances launched into this subnet and how DNS A and AAAA record queries to the instances should be handled. For more information, see Amazon EC2 instance hostname types in the User Guide. Available options:
EnableResourceNameDnsAAAARecord (true | false)
EnableResourceNameDnsARecord (true | false)
HostnameType (ip-name | resource-name)