NT4 Replication Support

AD DS supports the NT4 replication protocol as specified in [MS-NRPC] section 3.6 by maintaining two variables: nt4ReplicationState and pdcChangeLog. These variables are referenced by [MS-DRSR] section in order to specify the IDL_DRSGetNT4ChangeLog method. This section normatively specifies the format of these variables and how they are maintained during state changes in AD DS.

This section also normatively specifies the format of the referent of the pmsgOut.V1.pLog field of the DRS_MSG_NT4_CHGLOG_REPLY_V1 response message of the IDL_DRSGetNT4ChangeLog method [MS-DRSR] section