[Samba] No dynamic dns updates if client ip changed

[Rowland penny]

On 05/08/2019 14:02, basti mueller via samba wrote:
> Hi,
>   
> I've a problem with the dynamic dns updates. It seems they won't work.
>   
> Most of my clients have a dynmaic IP so sometimes they change. If I do a ping to the name, it tries do ping the old ip insead of the changed new one.
>   
> I tried a "samba_dnsupdate --verbose" and got a looking/checking output and at least a "No DNS updates needed". But the client still has the old dns-record
samba_dnsupdate has nothing to do with updating your clients dns records.
>   
> We've changed our setup from winbind to sssd some month ago. I'm not sure if this was working before we switched.
>   
Using sssd with Samba is not supported (not even by red-hat)
> My setup is:
> Linux Debian 4.9.168
I take it that is your kernel version
> Samba vers 4.5.16
But that means Debian Stretch, I suggest you upgrade to Buster
> sssd vers 1.15.0
apt-get purge sssd
> isc dhcp vers. 4.3.5
How is DHCP setup ?
>   
> smb.conf:
>
> [global]
>          netbios name = PDC
Why call it something it isn't ?
>          realm = COMPANY.COM
>          workgroup = COMPANY
>          server role = active directory domain controller
>          interfaces = br0 tun0
>          idmap_ldb:use rfc2307 = yes
>          template shell = /bin/bash
>          template homedir= /home/%U
>          dns forwarder = 8.8.8.8
Not using bind9
>          ldap server require strong auth = no
>          log file = /var/log/samba/log.samba-ad
>          max log size = 10000
>          log level = 2
>          domain logons = Yes
Don't need that line, it sort of goes with being an AD domain
>          panic action = /var/lib/samba/gdb_backtrace %d
>          mangled names = no
>          unix extensions = no
>          acl allow execute always = True
>          follow symlinks = yes
>          wide links = yes
Wow, you are brave, allowing wide links

Rowland