> For My internal DNS setup i want to create a internal root hint file .
> Should i follow the pattern of standard root hint file ?
Yes, create your own hints zone containing one or more NS RRsets with
their respective glue. Something along these lines:
. 3600000 IN NS ONE.MY-ROOTS.NET.
ONE.MY-ROOTS.NET. 3600000 IN A 192.168.1.1
-JP