An entry in this table is created for every MVRF for which
a data MDT group range is configured. A MVRF which does
not have a data MDT group range configured will not appear
in this table.
Creation of a row in this table is the equivalent of
configuring data MDT addresses for the given MVRF. Deletion
of a row in this table is the equivalent of deconfiguring
data MDT address usage in the given MVRF.
Note that ciscoMvpnMdtDefaultEntry for a MVRF should be
present in the device before ciscoMvpnMdtDataEntry for
that MVRF can be created.