Active Directory (which can implement DNS internally or refer to a DNS server)
is based upon Bind 4.3, which is incompatible with current versions (Bind =>8.*)

see this comment and scroll to Common issues

and this comparison which comments

Split horizon
Servers with the split-horizon DNS feature can give different answers depending
on the source IP address of the query.

thus giving the opportunity to direct the requestor to the nearest resource

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