[Samba] pdc emulator dns record missing after transferring role

[Alex]

Hi,

Samba: 4.12.0

During the migration from Windows DCs to Samba DCs, the following issue came up:
after  transferring  PDC  emulator  role to a samba DC, the according DNS record
wasn't re-created:

# samba-tool fsmo show -d 0 | grep PdcEmulationMasterRole
PdcEmulationMasterRole owner: CN=NTDS Settings,CN=VM-DC1,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=domain,DC=com

# dig _ldap._tcp.pdc._msdcs.abisoft.biz any
; <<>> DiG 9.11.4-P2-RedHat-9.11.4-26.P2.el8 <<>> _ldap._tcp.pdc._msdcs.domain.com any
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 40894
;; flags: qr aa rd ra ad; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0

;; ANSWER SECTION:
_ldap._tcp.pdc._msdcs.domain.com. 600 IN SRV    0 100 389 vm-dc1.domain.com.

# samba-tool fsmo transfer --role pdc -Uadministrator
FSMO transfer of 'pdc' role successful

# samba-tool fsmo show -d 0 | grep PdcEmulationMasterRole
PdcEmulationMasterRole owner: CN=NTDS Settings,CN=VM-DC4,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=domain,DC=com

# dig _ldap._tcp.pdc._msdcs.abisoft.biz any

; <<>> DiG 9.11.4-P2-RedHat-9.11.4-26.P2.el8 <<>> _ldap._tcp.pdc._msdcs.domain.com any
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 22457
;; flags: qr aa rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

After transferring the PDC role back to Windows DC, the record was re-created.

Am I missing something here or it's a bug?

-- 
Best regards,
Alex