Windows clients do this with the right settings; often those settings are the 
defaults. For Linux, there’s got to be a script out there that ties into the 
networking code, but I’ve never needed to look for a solution.

The biggest challenges I’ve seen in doing this right are:

  * cryptography: Are you accepting unsigned updates, or are you going to try 
to be secure, using either TSIG or GSS-TSIG? The latter is a real pain to set 
up, and a performance pig, but it can provide good security.
  * access control: If you don’t need unsigned updates, you can use the 
update-policy statement rather than allow-updates to set more granular access 
controls. But update-policy is more complex.
  * performance: How big is the environment? How many updates per second do you 
need to accept? With GSS-TSIG, performance can be an issue in a very large 
enterprise.
  * maintenance: After these devices register themselves, they might get 
decommissioned. Perhaps much later, but eventually upgrades happen and needs 
change. How are you cleaning up the stale records? Your DHCP server will do 
that for you, for DHCP clients.

Regards,
Chris Buxton

> On Aug 5, 2021, at 9:19 AM, Roberto Carna <robertocarn...@gmail.com> wrote:
> 
> Dear all, I know DDNS works with a DHCP server and dynamic IP's. When
> IP changes, the hostname in DNS is updated.
> 
> But I have this scenario:
> 
> I have several hosts with static IP's / hostnames and I want to
> register them to our private BIND DNS, and they should be updated if
> the IP or hostname changes.
> 
> Is there any way to do what I need ? Any Linux/Windows client to
> install in the servers in order to register IP and hostname to aour
> provate BIND ???
> 
> Special thanks!
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