When nmbd is started, the message of "my_name_register_failed" is output

Issue

Customer seeing following messages in /var/log/samba/nmbd.log

[2019/07/11 14:23:01.261303,  0, pid=30662, effective(0, 0), real(0, 0)] ../source3/nmbd/nmbd_mynames.c:36(my_name_register_failed)
  my_name_register_failed: Failed to register my name XXXXXXXX<YY> on subnet ZZZ.ZZZ.ZZZ.ZZZ.
[2019/07/11 14:23:01.261452,  0, pid=30662, effective(0, 0), real(0, 0)] ../source3/nmbd/nmbd_namelistdb.c:320(standard_fail_register)
  standard_fail_register: Failed to register/refresh name XXXXXXXX<YY> on subnet ZZZ.ZZZ.ZZZ.ZZZ

XXXXXXXX: NetBIOS name
YY: NetBIOS resource type
ZZZ.ZZZ.ZZZ.ZZZ: ip address