[Kea-users] DHCP-DDNS Windows Domain Clients - domain is contained twice

[Thomas Markwalder]

Hi:

We already have an issue open for this:

https://gitlab.isc.org/isc-projects/kea/-/issues/1529

It's currently in the kea 1.9.backlog, so hopefully we'll get this done 
in the next few months.



On 3/1/21 2:48 PM, Schöpke, Sebastian wrote:
>
> Hello,
>
> First of all, thank you very much vor this great tool. I’ve been using 
> kea-dhcp for some time now and it is a huge improvement – in terms of 
> interoperability and interfaces - compared to isc-dhcpd. 
> Unfortunately, there is one thing with DDNS and DHCP I can not figure 
> out how to configure properly. Domain-joined Windows clients add the 
> domainname to their hostname portion by default. Linux clients never 
> do that. In my opinion there is no solution yet if you have Windows 
> and Linux clients within one DHCP zone.
>
> Example: Windows-Client „A“ in domain „COMPANY.INT“ sends hostname 
> A.COMPANY.INT to my DHCP server. KEA-DHCP expects that this is just 
> the hostname and appends the ddns-qualifying-suffix to the domain name 
> as well. After that, DDNS updates the host to A.COMPANY.INT.COMPANY.INT.
>
> I cannot provide an empty ddns-qualifying-suffix as Linux Clients also 
> use the same DHCP server.
>
>  1. Is there any way to replace string by regex like
>     hostname-char-replacement for single characters. Instead of
>     replacing single characters I’d like to replace entire strings,
>     e.g. ddns-replace-part-of-hostname: “ ‘COMPANY.INT‘ , ‘‘ “
>  2. Have I missed something out? Does 1.8 or 1.9 already cover my usecase?
>
> Regarding this issue there is also an ticket open
>
> https://gitlab.isc.org/isc-projects/kea/-/issues/1529
>
> My config:
>
>         "ddns-generated-prefix": "host",
>
>         "ddns-override-client-update": true,
>
>         "ddns-override-no-update": false,
>
>         "ddns-qualifying-suffix": "company.int.",
>
>         "ddns-replace-client-name": "when-not-present",
>
>         "ddns-send-updates": true,
>
>         "ddns-update-on-renew": true,
>
>         "dhcp-ddns": {
>
>             "enable-updates": true,
>
>             "max-queue-size": 1024,
>
>             "ncr-format": "JSON",
>
>             "ncr-protocol": "UDP",
>
>             "sender-ip": "127.0.0.1",
>
>             "sender-port": 0,
>
>             "server-ip": "127.0.0.1",
>
>             "server-port": 53001
>
>         },
>
>         "hostname-char-replacement": "",
>
>         "hostname-char-set": "",
>
> Thank you very much!
>
> Best regards
>
> Sebastian Schoepke
>
>
> _______________________________________________
> ISC funds the development of this software with paid support subscriptions. Contact us at https://www.isc.org/contact/ for more information.
>
> To unsubscribe visit https://lists.isc.org/mailman/listinfo/kea-users.
>
> Kea-users mailing list
> Kea-users at lists.isc.org
> https://lists.isc.org/mailman/listinfo/kea-users

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.isc.org/pipermail/kea-users/attachments/20210301/39702a1b/attachment-0001.htm>