samba - Apr 2020 - Removing IP address from DC

On 30/04/2020 09:15, William Edwards via samba wrote:
> Hello,
>
> I am working on removing IPv4 from our AD DC machines, so they operate with
only IPv6. I have removed the machine's IPv4 addresses. It is no surprise,
though, that the IPv4 address still appears in Samba DNS (can be seen when
running 'samba_dnsupdate --verbose'). I am aware of the documentation
for changing an AD DC's IP address[1], but I could not find documentation
regarding removing an IP address.
>
> Q: How do I remove the old IPv4 address from Samba DNS (and possibly other
places)?
> No, the question is, why do you want to do this ? (note that I say
> 'want' not 'need')
I want to do this because IPv4 is a legacy protocol. I do not need IPv4, it is
old, and I do not want IPv4 in my network if I don't need it.
> Do you have more than 2,147,483,647 computers, printers, scanners etc ?
No.
> Are you doing something like connecting your AD directly to the internet ?
Yes.
> Then you will have to modify ?'dns_update_list' to only use IPv6,
then
> find all IPv4 addresses in AD, ensure that an IPv6 address exists for it
> and delete the IPv4 address and finally remove the IPv4 reverse zone.
Thank you.
> Rowland


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On 30/04/2020 09:50, William Edwards wrote:
> I want to do this because IPv4 is a legacy protocol. I do not need IPv4, it
is old, and I do not want IPv4 in my network if I don't need it.
Just because something is legacy, it doesn't mean you cannot still use
it.
>> Do you have more than 2,147,483,647 computers, printers, scanners etc ?
> No.
Then you have no real need to use IPv6
>> Are you doing something like connecting your AD directly to the
internet ?
> Yes.
Oh dear, that really isn't a good idea, but it is your network and you 
get to pickup the pieces.

Rowland

On 30/04/2020 09:50, William Edwards wrote:
> I want to do this because IPv4 is a legacy protocol. I do not need IPv4, it
is old, and I do not want IPv4 in my network if I don't need it.
Just because something is legacy, it doesn't mean you cannot still use
it.
>> Do you have more than 2,147,483,647 computers, printers, scanners etc ?
> No.
> Then you have no real need to use IPv6
That's thinking in the wrong direction.
I have no need to use IPv4. My network does IPv6, my VPN does IPv6, so why would
I still use a legacy protocol?



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