[Samba] Failed to commit objects: WERR_GEN_FAILURE/NT_STATUS_INVALID_NETWORK_RESPONSE

[Adam Xu]

Hi All,

Directory Replication failed between my 2 DCs.

OS：CentOS 7.9

Samba version: 4.14.9-SerNet-RedHat-10.el7

when I run:

[root at dc1 ~]# samba-tool drs showrepl --summary
There are failing connections
Failing inbound connection:
DC=mydomain,DC=com
     Default-First-Site-Name\DC2 via RPC
         DSA object GUID: ed8970e5-84cc-43dd-89f1-4af8d6ab675a
         Last attempt @ Wed Nov 10 14:26:48 2021 CST failed, result 58 
(WERR_BAD_NET_RESP)
         678 consecutive failure(s).
         Last success @ Mon Nov  8 15:26:06 2021 CST

[root at dc2 ~]# samba-tool drs showrepl --summary
[ALL GOOD]

[root at dc1 ~]# samba-tool drs replicate dc2 dc1 dc=mydomain,dc=com 
--sync-all -d 9
........................
Replicate from dc1 to dc2 was successful.

[root at dc1 ~]# samba-tool drs replicate dc1 dc2 dc=mydomain,dc=com 
--sync-all -d 9
..................................
                            0: DRSUAPI_DRS_DISABLE_AUTO_SYNC
                            0: DRSUAPI_DRS_DISABLE_PERIODIC_SYNC
                            0: DRSUAPI_DRS_USE_COMPRESSION
                            0: DRSUAPI_DRS_NEVER_NOTIFY
                            0: DRSUAPI_DRS_SYNC_PAS
                            0: DRSUAPI_DRS_GET_ALL_GROUP_MEMBERSHIP
      drsuapi_DsReplicaSync: struct drsuapi_DsReplicaSync
         out: struct drsuapi_DsReplicaSync
             result                   : WERR_BAD_NET_RESP
ERROR(<class 'samba.drs_utils.drsException'>): DsReplicaSync failed - 
drsException: DsReplicaSync failed (58, 'WERR_BAD_NET_RESP')
   File "/usr/lib64/python3.6/site-packages/samba/netcmd/drs.py", line 
571, in run
     drs_utils.sendDsReplicaSync(server_bind, server_bind_handle, 
source_dsa_guid, NC, req_options)
   File "/usr/lib64/python3.6/site-packages/samba/drs_utils.py", line 
92, in sendDsReplicaSync
     raise drsException("DsReplicaSync failed %s" % estr)

And log in log.samba

[2021/11/10 14:16:48.824264,  1] 
../../source4/dsdb/repl/replicated_objects.c:904(dsdb_replicated_objects_commit)
   Failed to apply records: 
../../source4/dsdb/samdb/ldb_modules/repl_meta_data.c:4672: Failed to 
remove backlink of msDS-RevealedDSAs when deleting 
CN=dana_hu\0ADEL:8ab29f83-a30b-409f-b091-50d00debde72,CN=Deleted 
Objects,DC=mydomain,DC=com: Unable to find GUID for DN 
CN=dana_hu,OU=Users,OU=Suzhou,DC=mydomain,DC=com
   : Operations error
[2021/11/10 14:16:48.825325,  0] 
../../source4/dsdb/repl/drepl_out_helpers.c:1184(dreplsrv_op_pull_source_apply_changes_trigger)
   Failed to commit objects: 
WERR_GEN_FAILURE/NT_STATUS_INVALID_NETWORK_RESPONSE
[2021/11/10 14:21:48.834042,  1] 
../../source4/dsdb/repl/replicated_objects.c:904(dsdb_replicated_objects_commit)
   Failed to apply records: 
../../source4/dsdb/samdb/ldb_modules/repl_meta_data.c:4672: Failed to 
remove backlink of msDS-RevealedDSAs when deleting 
CN=dana_hu\0ADEL:8ab29f83-a30b-409f-b091-50d00debde72,CN=Deleted 
Objects,DC=mydomain,DC=com: Unable to find GUID for DN 
CN=dana_hu,OU=Users,OU=Suzhou,DC=mydomain,DC=com
   : Operations error
[2021/11/10 14:21:48.835059,  0] 
../../source4/dsdb/repl/drepl_out_helpers.c:1184(dreplsrv_op_pull_source_apply_changes_trigger)
   Failed to commit objects: 
WERR_GEN_FAILURE/NT_STATUS_INVALID_NETWORK_RESPONSE
[2021/11/10 14:24:54.943959,  1] 
../../source4/dns_server/dns_query.c:1141(dns_server_process_query_got_auth)
   dns_server_process_query_got_auth: Failed to add SOA record: 
WERR_DNS_ERROR_RCODE_FORMAT_ERROR
[2021/11/10 14:26:48.847378,  1] 
../../source4/dsdb/repl/replicated_objects.c:904(dsdb_replicated_objects_commit)
   Failed to apply records: 
../../source4/dsdb/samdb/ldb_modules/repl_meta_data.c:4672: Failed to 
remove backlink of msDS-RevealedDSAs when deleting 
CN=dana_hu\0ADEL:8ab29f83-a30b-409f-b091-50d00debde72,CN=Deleted 
Objects,DC=mydomain,DC=com: Unable to find GUID for DN 
CN=dana_hu,OU=Users,OU=Suzhou,DC=mydomain,DC=com
   : Operations error
[2021/11/10 14:26:48.848535,  0] 
../../source4/dsdb/repl/drepl_out_helpers.c:1184(dreplsrv_op_pull_source_apply_changes_trigger)
   Failed to commit objects: 
WERR_GEN_FAILURE/NT_STATUS_INVALID_NETWORK_RESPONSE

How can I fix it? Thanks.