search for: idl_drsgetncchang

...-driven replication. A DC's repsTo abstract attribute is populated as follows: 1. A DC server's repsTo abstract attribute is populated for event-driven replication to client if client's repsFrom tuple for server has the DRS_ADD_REF bit set in its replicaFlags field, and client calls the IDL_DRSGetNCChanges method on server during scheduled replication. The DC client sets the DRS_ADD_REF bit in Request.ulFlags on the scheduled call to IDL_DRSGetNCChanges on server ([MS-DRSR] section 4.1.10.4.1) and server updates repsTo for event-driven replication to client as a result ([MS-DRSR] section 4.1.10.5.2...

I was running samba 4.21 as a domain controller and now I see this situation , I have empty outbound neighbors, but if you look from the windows side, then this is the difference between windows controllers and samba, for some reason the repsTo attribute is not filled, for example, the configuration context, although windows controllers have both attributes fully filled, although they are the same