High Level Features:
1. VMs are dual-stack.
2. Subnets can have either GUA or ULA addressing along with IPv4.
3. Subnets are /64 and VMs get /96 address.
4. ULA addressing is useful for intra VPC traffic.
5. GUA addressing is useful if internet facing connection is required.
6. VMs can have multiple IPv6 NICs.
