i have tried bptestbpcd from the master to itself :
C:\WINDOWS\system32>bptestbpcd -debug -verbose -client svie-priw-inf35
11:10:06.457 [408.6892] <2> bptestbpcd: VERBOSE = 0
11:10:06.457 [408.6892] <8> cache_item_to_file: [vnet_addrinfo.c:6434] rename() failed 13 0xd
11:10:06.457 [408.6892] <8> vnet_cached_getaddrinfo_and_update: [vnet_addrinfo.c:1705] cache_item_to_file() failed 0 0x0
11:10:06.457 [408.6892] <2> logconnections: BPCD CONNECT FROM 10.224.48.9.51110 TO 10.224.48.9.13782 fd = 520
11:10:06.551 [408.6892] <2> bpcr_get_version_rqst: bpcd version: 07610001
1 0 2
10.224.48.9:51110 -> 10.224.48.9:13782
10.224.48.9:4829 <- 10.224.48.9:51111
11:10:06.551 [408.6892] <2> bpcr_get_peername_rqst: Server peername length = 25
11:10:06.551 [408.6892] <2> bpcr_get_hostname_rqst: Server hostname length = 15
11:10:06.551 [408.6892] <2> bpcr_get_clientname_rqst: Server clientname length = 15
11:10:06.551 [408.6892] <2> bpcr_get_version_rqst: bpcd version: 07610001
11:10:06.551 [408.6892] <2> bpcr_get_platform_rqst: Server platform length = 7
11:10:06.551 [408.6892] <2> bpcr_get_version_rqst: bpcd version: 07610001
11:10:06.551 [408.6892] <2> bpcr_patch_version_rqst: theRest == > <
11:10:06.551 [408.6892] <2> bpcr_get_version_rqst: bpcd version: 07610001
11:10:06.551 [408.6892] <2> bpcr_patch_version_rqst: theRest == > <
11:10:06.551 [408.6892] <2> bpcr_get_version_rqst: bpcd version: 07610001
PEER_NAME = SVIE-PRIW-INF35.sie.local
HOST_NAME = svie-priw-inf35
CLIENT_NAME = svie-priw-inf35
VERSION = 0x07610001
PLATFORM = win_x64
PATCH_VERSION = 7.6.1.2
SERVER_PATCH_VERSION = 7.6.1.2
MASTER_SERVER = svie-priw-inf35
EMM_SERVER = svie-priw-inf35
NB_MACHINE_TYPE = MASTER_SERVER
10.224.48.9:1460 <- 10.224.48.9:51112
<2>bptestbpcd: EXIT status = 0
11:10:06.598 [408.6892] <2> bptestbpcd: EXIT status = 0
please find below the nbfsd log of the client