[Samba] Ubuntu Samba Upgrade Problem

[Robert Steinmetz]

I upgraded a Ubuntu 18.04 LTS samba to 20.04 yesterday Testing it I find 
the Samba part of the server is no working properly.

The new Samba Version 4.11.6-Ubuntu. The PDC is running 4.7.6-Ubuntu. I 
plan to upgrade the PDC as soon as I finish this one.

The server is a MEMBER SERVER of a NT4 style domain. smbd, nmbs and 
winbind are running but wbinfo and getent don't seem to be getting 
anything. I cannot browse the computer.

I have not edited the smb.conf file.
The output of testparm and the global section is below.
> # testparm
> Load smb config files from /etc/samba/smb.conf
> Loaded services file OK.
> Server role: ROLE_DOMAIN_MEMBER
>
> Press enter to see a dump of your service definitions
>
> # Global parameters
> [global]
>         log file = /var/log/samba/log.%m
>         max log size = 1000
>         name resolve order = wins bcast host
>         panic action = /usr/share/samba/panic-action %d
>         security = DOMAIN
>         server string = %h file server (Samba, Ubuntu)
>         template shell = /bin/bash
>         winbind enum groups = Yes
>         winbind enum users = Yes
>         winbind use default domain = Yes
>         wins proxy = Yes
>         wins server = 192.168.1.24
>         workgroup = ATLANTA
>         idmap config * : range = 10000-20000
>         idmap config * : backend = tdb
>         admin users = administrator rob
>         hosts allow = 192.168.1.0/255.255.255.0
I think it likely that the problem is caused by changes in the Ubuntu 
networking.
-- 

Robert Steinmetz, AIA
Principal
Steinmetz & Associates
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