samba - Jul 2025 - WERR_DNS_ERROR_DS_UNAVAILABLE when asking for local dns server info

root at vdce:/home/damiano/work# ps ax | grep 'samba' | grep
'rpc'
 ?4580 ???????? S????? 0:00 samba: task[rpc] pre-fork master
 ?4586 ???????? S????? 1:35 samba: task[rpc] pre-forked worker(0)
 ?4590 ???????? S????? 0:00 samba: task[rpc] pre-forked worker(1)
 ?4594 ???????? S????? 0:00 samba: task[rpc] pre-forked worker(2)
 ?4600 ???????? S????? 0:00 samba: task[rpc] pre-forked worker(3)


there are three rpc workers, good, where is written what is that they 
are serving ?


root at vdce:/home/damiano/work# rpcclient? -U "" -N -I 192.168.999.40
-c
srvinfo vdce
 ??????? VDCE?????????? Wk Sv PrQ Unx NT SNT Samba 
4.22.2-Debian-4.22.2+dfsg-1~bpo12+1
 ??????? platform_id???? :?????? 500
 ??????? os version????? :?????? 6.1
 ??????? server type???? :?????? 0x809a03


Il 2025-07-03 10:13 AM, Rowland Penny via samba ha
scritto:
> ps ax | grep 'samba' | grep 'rpc'

On Thu, 3 Jul 2025 10:19:36 +0200
"CED Ing. Damiano Bolla via samba" <samba at lists.samba.org>
wrote:
> 
> root at vdce:/home/damiano/work# ps ax | grep 'samba' | grep
'rpc'
>  ?4580 ???????? S????? 0:00 samba: task[rpc] pre-fork master
>  ?4586 ???????? S????? 1:35 samba: task[rpc] pre-forked worker(0)
>  ?4590 ???????? S????? 0:00 samba: task[rpc] pre-forked worker(1)
>  ?4594 ???????? S????? 0:00 samba: task[rpc] pre-forked worker(2)
>  ?4600 ???????? S????? 0:00 samba: task[rpc] pre-forked worker(3)
> 
> 
> there are three rpc workers, good, where is written what is that they 
> are serving ?
I have no idea, knowing Samba, you probably will have to dig into the
code.
> 
> 
> root at vdce:/home/damiano/work# rpcclient? -U "" -N -I
192.168.999.40
> -c srvinfo vdce
>  ??????? VDCE?????????? Wk Sv PrQ Unx NT SNT Samba 
> 4.22.2-Debian-4.22.2+dfsg-1~bpo12+1
>  ??????? platform_id???? :?????? 500
>  ??????? os version????? :?????? 6.1
>  ??????? server type???? :?????? 0x809a03
> 
What I can say is, everything you have posted matches my running
domain, so, do you have all the required Samba packages installed ? Is
there a firewall or similar getting in the way ?

Rowland