https://docs.oracle.com/en/learn/resolve-onprem-dns-from-oci/index.html#considerations
https://blogs.oracle.com/cloud-infrastructure/post/integrate-internal-dns-lan-private-dns-oci
https://www.ateam-oracle.com/post/oci-private-dns—common-scenarios
https://k21academy.com/oracle-cloud/private-dns-in-oracle-cloud-oci/
‘https://www.thatfinnishguy.blog/2020/11/16/oci-private-dns-part-1-configuration/
‘https://www.thatfinnishguy.blog/2020/11/18/oci-private-dns-part-2-dns-forwarders-and-listeners/#:~:text=You%20need%20to%20assign%20endpoint,on%20both%20side%20of%20VCNs.&text=After%20doing%20this%20I%20should,one%20forwarder%20on%20both%20sides.
