[K12OSN] OT: /etc/hosts autoupdate

Calvin Dodge caldodge at gmail.com
Tue May 30 19:32:59 UTC 2006

On 5/30/06, Paul VanGundy <vangundypw at sau14.k12.nh.us> wrote:
> Is there a way for /etc/hosts to be automatically updated when DHCP gives a
> lease to a client? So in /etc/hosts it will say something like this:

I don't know about software to update /etc/hosts, but this feature IS
available in DNS.

Basically, you:
1) tell DHCP what the ddns-update domain is, and where the server is
(and, possibly, a cryptographic key to authenticate the DHCP server to
2) tell the name server to accept updates from the DHCP server (make
sure name server can write to its data directory (/var/named, or
/var/named/chroot/var/named if bind-chroot is installed).

After that, client names should go into forward and reverse DNS zones
once they get an IP address from DHCP.


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