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A company operates custom DNS servers running BIND for name resolution across multiple VPCs in different AWS accounts within the same AWS Organizations setup. These VPCs are interconnected via a transit gateway, with the BIND servers hosted in a central VPC and configured to forward queries for an on-premises DNS domain to on-premises DNS servers. To ensure all VPCs use the custom DNS servers, a VPC DHCP options set specifying these DNS servers has been applied to all VPCs.
A development team is unable to mount a newly created Amazon EFS file system to an Amazon EC2 instance because the instance cannot resolve the IP address for the EFS mount point fs-33444567d.efs.us-east-1.amazonaws.com. The network engineer must implement a solution to enable all development teams in the organization to mount EFS file systems.
Which two steps should the network engineer take to meet these requirements?