question regards to dynamic dns update

Reindl Harald h.reindl at
Wed Nov 11 10:00:43 UTC 2015

Am 11.11.2015 um 10:55 schrieb Julie Xu:
> Could I ask a question? I have a subnet, which all the equipment has static ip address recorded to machine. For the purpose of getting these subnet controlled, I would like to use dynamic dns update.
> After I read some bind  information, it looks like most configure example is use dhcp/ddns together.
> Please advice, if I can make a subdomain and make this subnet will contact the dns server to get a dns name dynamicly. I would like it:
> 	- every machine in this subnet will get a dns name automatically
> 	- the dns name is same as the host name
> 	- the dns name will automatically be removed after the ip offline or the hostname changed.
> If these action can be achive, please advice how can I configure it?
> Any comments will be appreciated

"the dns name will automatically be removed after the ip offline" makes 
no sense, named and dhcpd can't know when a machine goes offline

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